{"title":"Fosi audio","description":"\u003ch1 data-path-to-node=\"11\"\u003e\u003cb\u003eFosi Audio: Powering Your Desktop Hi-Fi Experience\u003c\/b\u003e\u003c\/h1\u003e\n\u003cp data-path-to-node=\"12\"\u003eFosi Audio is a dedicated innovator in the field of compact, high-fidelity audio equipment. Our mission is to make premium sound quality accessible to everyone, specializing in small, powerful, and highly efficient \u003cb\u003eMini Amplifiers\u003c\/b\u003e and versatile \u003cb\u003eDesktop Audio Components\u003c\/b\u003e. Fosi Audio products are the perfect solution for upgrading your desktop, office, or small living room setup without breaking the bank.\u003c\/p\u003e\n\u003ch2 data-path-to-node=\"13\"\u003e\u003cb\u003e⭐ The Core of Compact Power: Mini Amplifiers\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp data-path-to-node=\"14\"\u003eThe backbone of the Fosi Audio lineup is our selection of ultra-compact integrated amplifiers, built around efficiency and sound clarity.\u003c\/p\u003e\n\u003cul data-path-to-node=\"15\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,0,0\"\u003e\u003cb\u003eHigh-Efficiency Class D Technology:\u003c\/b\u003e Our amplifiers utilize cutting-edge \u003cb\u003eClass D amplification\u003c\/b\u003e to deliver substantial power output in a small footprint while maintaining minimal heat generation. This ensures clean, dynamic sound to drive passive bookshelf speakers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,1,0\"\u003e\u003cb\u003eAffordable Hi-Fi Performance:\u003c\/b\u003e We focus on optimizing the audio signal path using quality components to achieve true high-fidelity sound, making audiophile performance accessible to entry-level users.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,2,0\"\u003e\u003cb\u003ePlug-and-Play Simplicity:\u003c\/b\u003e Designed for ease of use, our amplifiers and components require minimal setup, allowing users to quickly connect their PC, smartphone, or streamer to passive speakers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-path-to-node=\"16\"\u003e\u003cb\u003e🎧 Specialized Components for Sound Customization\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp data-path-to-node=\"17\"\u003eFosi Audio extends its product range beyond basic amplification to offer components that allow users to fine-tune their listening experience.\u003c\/p\u003e\n\u003cul data-path-to-node=\"18\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"18,0,0\"\u003e\u003cb\u003eTube Preamplifiers:\u003c\/b\u003e Our popular line of \u003cb\u003eTube (Vacuum Tube) Preamps\u003c\/b\u003e allows users to introduce the classic warmth, smoothness, and rich harmonics of tube audio into their digital systems, perfect for enthusiasts seeking a classic sound signature.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"18,1,0\"\u003e\u003cb\u003eHeadphone Amplifiers and DACs:\u003c\/b\u003e We offer dedicated \u003cb\u003eHeadphone Amplifiers\u003c\/b\u003e for driving high-impedance headphones and versatile \u003cb\u003eDACs (Digital-to-Analog Converters)\u003c\/b\u003e to bypass computer sound cards and improve digital source quality.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-path-to-node=\"19\"\u003e\u003cb\u003e💡 Built for Modern Desktop Systems\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp data-path-to-node=\"20\"\u003eFosi Audio products excel in environments where space is limited but performance cannot be compromised.\u003c\/p\u003e\n\u003cul data-path-to-node=\"21\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"21,0,0\"\u003e\u003cb\u003eCompact Footprint:\u003c\/b\u003e The small, industrial metal chassis of our devices takes up minimal desk space, maintaining a clean and modern aesthetic.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"21,1,0\"\u003e\u003cb\u003eVersatile Inputs:\u003c\/b\u003e Products often feature a variety of inputs, including \u003cb\u003eBluetooth (AptX supported)\u003c\/b\u003e, \u003cb\u003eRCA\u003c\/b\u003e, and \u003cb\u003eOptical\/Coaxial\u003c\/b\u003e, ensuring compatibility with almost any source, from turntables to smart TVs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"22\"\u003eChoose Fosi Audio for reliable, powerful, and clean sound that proves great things—and great sound—come in small packages.\u003c\/p\u003e","products":[{"product_id":"fosi-k7","title":"Fosi Audio K7","description":"\u003cp\u003eFosi Audio K7 is a fully balanced desktop DAC and headphone amplifier designed for HiFi listening, gaming and communication.\u003c\/p\u003e\u003cp\u003eAK4493SEQ conversion, USB\/optical\/coaxial\/Bluetooth inputs, microphone support and powerful 3.5mm and 4.4mm outputs make it a comprehensive desktop audio hub.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eFully balanced high-output design\u003c\/h3\u003e\u003cp\u003eThe 4.4mm output provides at least 2.1W + 2.1W at 32Ω for compatible headphones.\u003c\/p\u003e\u003ch3\u003eAudiophile digital architecture\u003c\/h3\u003e\u003cp\u003eCombines an AK4493SEQ DAC, XMOS XU208 USB processor and TPA6120 headphone amplification.\u003c\/p\u003e\u003ch3\u003eGaming and microphone features\u003c\/h3\u003e\u003cp\u003eA microphone input with noise reduction and physical EQ controls support gaming and online communication.\u003c\/p\u003e\u003ch3\u003eExtensive source connectivity\u003c\/h3\u003e\u003cp\u003eAccepts USB-C, optical, coaxial and Bluetooth aptX HD\/LL sources.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDesktop HiFi headphone systems\u003c\/li\u003e\n\u003cli\u003ePC and console gaming\u003c\/li\u003e\n\u003cli\u003eTVs and projectors with digital output\u003c\/li\u003e\n\u003cli\u003ePowered speakers or amplifiers using RCA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirectly driving passive speakers\u003c\/li\u003e\n\u003cli\u003ePortable battery-powered use\u003c\/li\u003e\n\u003cli\u003eUsers requiring HDMI ARC\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThe 4.4mm output requires correctly wired balanced headphones; do not use an unsafe single-ended adapter.\u003c\/li\u003e\n\u003cli\u003eRCA is a line-level output for powered speakers or amplifiers, not passive speakers.\u003c\/li\u003e\n\u003cli\u003eMicrophone compatibility and console operation depend on the selected input mode and system settings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media(max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important}}.emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0\"\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioK7001_2c419e59-da13-4348-8e24-b3bc6561c3f6.jpg?v=1758258725\" alt=\"Fosi Audio K7 white background image\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_K7_002_e564324c-acb0-4e6b-b40c-ebe753b45211.webp?v=1758258779\" alt=\"Fosi Audio K7 DAC Headphone Amp\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_K7_003.webp?v=1758258804\" alt=\"Audiophile-Grade Chipset Integrated\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eWhat is the maximum headphone output?\u003c\/h3\u003e\u003cp\u003eThe balanced output is rated at ≥2.1W + 2.1W at 32Ω; the 3.5mm output is ≥600mW + 600mW at 32Ω.\u003c\/p\u003e\u003ch3\u003eDoes K7 support Bluetooth?\u003c\/h3\u003e\u003cp\u003eYes, including aptX HD and aptX LL.\u003c\/p\u003e\u003ch3\u003eCan it connect to a TV?\u003c\/h3\u003e\u003cp\u003eYes, through compatible optical or coaxial PCM output.\u003c\/p\u003e\u003ch3\u003eCan it power passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. Use its RCA output with powered speakers or a power amplifier.\u003c\/p\u003e\u003ch3\u003eDoes it support microphones?\u003c\/h3\u003e\u003cp\u003eYes, through the 3.5mm microphone input and compatible system setup.\u003c\/p\u003e\u003ch3\u003eWhat is the maximum USB resolution?\u003c\/h3\u003e\u003cp\u003ePCM up to 32-bit\/384kHz and DSD256.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003ePC gaming and communication\u003c\/h3\u003e\u003cp\u003eSource icon: computer\u003cbr\u003eSource: PC \/ Mac\u003cbr\u003eConnection: USB-C audio + microphone\u003cbr\u003eOutput connection: 3.5mm or 4.4mm headphone output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Gaming headset \/ headphones\u003c\/p\u003e\u003ch3\u003eTV headphone system\u003c\/h3\u003e\u003cp\u003eSource icon: tv\u003cbr\u003eSource: TV \/ projector\u003cbr\u003eConnection: Optical or coaxial PCM\u003cbr\u003eOutput connection: Headphone output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Wired headphones\u003c\/p\u003e\u003ch3\u003ePowered speaker system\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: PC \/ streamer \/ Bluetooth device\u003cbr\u003eConnection: USB, digital or Bluetooth\u003cbr\u003eOutput connection: RCA line output\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Powered speakers or amplifier\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eDigital architecture\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eDAC\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003eAKM AK4493SEQ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eUSB processor\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003eXMOS XU208\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eHeadphone amplifier\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003eTPA6120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eMaximum resolution\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003ePCM 32-bit \/ 384kHz; DSD256\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eInputs\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003eUSB-C; optical; coaxial; Bluetooth; 3.5mm microphone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eOutputs and performance\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eOutputs\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e3.5mm single-ended; 4.4mm balanced; RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003e3.5mm rated output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e≥600mW + 600mW @ 32Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003e4.4mm rated output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e≥2.1W + 2.1W @ 32Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSNR\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e≥121dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eTHD+N\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e≤0.0002%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003ePower input\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003eDC 12V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eComparison: Which Fosi Audio model is right for you?\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:680px\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eK5 Pro\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eQ4\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eK7\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePrimary use\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eGaming DAC with microphone\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eSimple desktop DAC\/headphone amp\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePremium HiFi and gaming DAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eInputs\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eUSB, optical, coaxial, microphone\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eUSB, optical, coaxial\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eUSB, optical, coaxial, Bluetooth, microphone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHeadphone output\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e3.5mm and 4.4mm balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMaximum USB playback\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e24-bit \/ 96kHz\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e24-bit \/ 96kHz\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e32-bit \/ 384kHz; DSD256\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBest use\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBudget gaming communication\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBasic music and TV upgrade\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHigh-output balanced desktop system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43662606073949,"sku":"Fosi-Audio-K7-Black-US","price":111.48,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43673817743453,"sku":"Fosi-Audio-K7-Black-EU","price":199.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43673817776221,"sku":"Fosi-Audio-K7-Black-AU","price":199.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43673817808989,"sku":"Fosi-Audio-K7-Black-UK","price":199.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_K7_a4861caf-66b1-4e0e-aa08-280ef8f901b0.webp?v=1785376463"},{"product_id":"fosi-zd3","title":"Fosi Audio ZD3","description":"\u003cp\u003eFosi Audio ZD3 is a fully balanced desktop DAC and preamplifier for computers, televisions, wireless sources and dedicated digital transports.\u003c\/p\u003e\u003cp\u003eThe ES9039Q2M platform, HDMI ARC, USB, Bluetooth, XLR\/RCA outputs and bypass mode make it a versatile digital hub for modern HiFi systems.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003cp\u003eFour reasons this product deserves a place in a well-planned audio system.\u003c\/p\u003e\u003ch3\u003eES9039Q2M Balanced Conversion\u003c\/h3\u003e\u003cp\u003eThe flagship ESS DAC architecture supports high-resolution decoding and balanced analog output.\u003c\/p\u003e\u003ch3\u003eHDMI ARC for Television Audio\u003c\/h3\u003e\u003cp\u003eConnect a compatible TV directly and control a stereo system without relying on a separate AV receiver.\u003c\/p\u003e\u003ch3\u003eVariable or Fixed Output\u003c\/h3\u003e\u003cp\u003eUse preamp mode for direct volume control or bypass mode for a fixed-level connection to another preamplifier.\u003c\/p\u003e\u003ch3\u003eTrigger and Remote Integration\u003c\/h3\u003e\u003cp\u003e12V trigger input\/output, OLED display and remote control streamline everyday system operation.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTV-to-HiFi upgrades using HDMI ARC\u003c\/li\u003e\n\u003cli\u003eBalanced power amplifiers such as ZA3 or V3 Mono\u003c\/li\u003e\n\u003cli\u003eComputer USB audio systems\u003c\/li\u003e\n\u003cli\u003eBluetooth and multi-source digital systems\u003c\/li\u003e\n\u003cli\u003eActive speakers with XLR or RCA input\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUsers needing built-in speaker amplification\u003c\/li\u003e\n\u003cli\u003eHeadphone listeners without a separate headphone amplifier\u003c\/li\u003e\n\u003cli\u003eAnalog-only sources such as a turntable\u003c\/li\u003e\n\u003cli\u003eSystems requiring Wi-Fi network streaming apps inside the DAC\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_ZD3_014.webp\" alt=\"Fosi Audio ZD3 ES9039Q2M balanced DAC performance banner\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_ZD3_018.webp\" alt=\"Fosi Audio ZD3 HDMI ARC USB optical coaxial and Bluetooth connections\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_ZD3_010.webp\" alt=\"Fosi Audio ZD3 balanced desktop DAC and preamplifier system banner\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eZD3 is a DAC\/preamp, not a speaker power amplifier; connect it to active speakers or a separate amplifier.\u003c\/li\u003e\n\u003cli\u003eUse bypass only when downstream equipment provides volume control, because bypass sends fixed-level output.\u003c\/li\u003e\n\u003cli\u003eHDMI is ARC audio input rather than a general HDMI video switch or HDMI output.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eCan the ZD3 drive passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. Connect its XLR or RCA output to a power amplifier before passive speakers.\u003c\/p\u003e\u003ch3\u003eCan it connect directly to a television?\u003c\/h3\u003e\u003cp\u003eYes, through a compatible HDMI ARC connection. Configure the television for supported digital audio output.\u003c\/p\u003e\u003ch3\u003eDoes it have a headphone output?\u003c\/h3\u003e\u003cp\u003eNo. Add a separate headphone amplifier if headphone listening is required.\u003c\/p\u003e\u003ch3\u003eCan it connect to active speakers?\u003c\/h3\u003e\u003cp\u003eYes. Use XLR or RCA output and operate the ZD3 in preamp mode for volume control.\u003c\/p\u003e\u003ch3\u003eWhat is bypass mode?\u003c\/h3\u003e\u003cp\u003eIt bypasses variable preamp control and sends fixed-level output to a downstream preamp or integrated amplifier.\u003c\/p\u003e\u003ch3\u003eDoes Bluetooth transmit to headphones?\u003c\/h3\u003e\u003cp\u003eNo. Bluetooth is an input for receiving audio from a source device.\u003c\/p\u003e\u003ch3\u003eDoes it support high-resolution USB audio?\u003c\/h3\u003e\u003cp\u003eYes, up to PCM 32-bit\/768kHz and DSD512 over USB with compatible hardware and software.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eTV stereo system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Television\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e HDMI ARC\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e XLR or RCA\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Power amplifier or active speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Select a compatible PCM output setting on the TV if required.\u003c\/p\u003e\u003ch3\u003eComputer audio\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e PC \/ Mac\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e XLR or RCA\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Power amplifier, headphone amp or active speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Some Windows configurations require the Fosi USB driver.\u003c\/p\u003e\u003ch3\u003eWireless audio system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Phone \/ tablet\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Bluetooth 5.0\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e XLR or RCA\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Amplifier or active speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Bluetooth is receive-only on the ZD3.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eCore Architecture\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBalanced DAC \/ preamplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDAC\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eESS ES9039Q2M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eUSB Interface\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eXMOS XU316\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBluetooth Chip\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eQCC3031\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eOp-Amp\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eLME49720; swappable design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eDigital Audio\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eUSB Maximum\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePCM 32-bit\/768kHz; DSD512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eOptical \/ Coaxial Maximum\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePCM 24-bit\/192kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBluetooth Maximum\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePCM 24-bit\/48kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBluetooth Codecs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eaptX HD, aptX, AAC, SBC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBluetooth Version\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e5.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eInputs and Outputs\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eUSB, HDMI ARC, coaxial, optical, Bluetooth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eOutputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBalanced XLR; RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eXLR Output Level\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e5Vrms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRCA Output Level\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e2.5Vrms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTrigger\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e12V trigger input and output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eMeasured Performance\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSINAD\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e126dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSNR\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≥126dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTHD+N\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e\u0026lt;0.00008%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDynamic Range\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≥123dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNoise Floor\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≤2μV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDC 12V\/1.5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSetup\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTV HiFi\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTV → HDMI ARC → ZD3 → amplifier → passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBalanced desktop\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eComputer → USB → ZD3 → XLR active speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eWireless system\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePhone → Bluetooth → ZD3 → amplifier or active speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eZD3\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eZH3\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eGR40\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eProduct Position\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBalanced DAC \/ preamp\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDAC \/ headphone amp \/ preamp\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTube DAC \/ headphone amp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDAC Chip\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eES9039Q2M\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAKM AK4493SEQ\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eUSB Maximum\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePCM 768kHz \/ DSD512\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePCM 768kHz \/ DSD512\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eProduct-dependent lower tier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eHDMI ARC\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBluetooth Input\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eHeadphone Output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e4.4mm, 6.35mm\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAnalog Input\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRCA\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBalanced Line Output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eXLR\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eXLR\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRemote Control\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBest Use\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTV and balanced amplifier hub\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eComplete desktop\/headphone hub\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eCompact tube-flavoured desktop audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43673825869917,"sku":"Fosi-Audio-ZD3-Black-US","price":179.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43673825902685,"sku":"Fosi-Audio-ZD3-Black-EU","price":179.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43673825935453,"sku":"Fosi-Audio-ZD3-Black-AU","price":179.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43673825968221,"sku":"Fosi-Audio-ZD3-Black-UK","price":179.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_ZD3_9168f715-e410-417f-bb73-d3afe69441fc.webp?v=1785382374"},{"product_id":"fosi-audio-bt20a","title":"Fosi Audio BT20A","description":"\u003cp\u003eFosi Audio BT20A is a compact two-channel Class-D integrated amplifier for passive speakers, with Bluetooth and RCA inputs.\u003c\/p\u003e\u003cp\u003eIt combines straightforward wireless playback, bass and treble adjustment, and up to 100 W per channel maximum output in a small desktop-friendly chassis.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eCompact passive-speaker amplifier\u003c\/h3\u003e\u003cp\u003eProvides stereo speaker amplification without the size and complexity of a full-size receiver.\u003c\/p\u003e\u003ch3\u003eBluetooth and wired playback\u003c\/h3\u003e\u003cp\u003eSwitch between Bluetooth 5.0 streaming and an analog RCA source.\u003c\/p\u003e\u003ch3\u003eFront-panel tone control\u003c\/h3\u003e\u003cp\u003eIndependent bass and treble knobs make quick system tuning simple.\u003c\/p\u003e\n\u003ch3\u003eSimple everyday operation\u003c\/h3\u003e\u003cp\u003eA compact front panel keeps power, volume, bass and treble adjustment immediately accessible without menus or an app.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDesktop passive-speaker systems\u003c\/li\u003e\n\u003cli\u003eBookshelf speakers in small and medium rooms\u003c\/li\u003e\n\u003cli\u003eSimple Bluetooth stereo systems\u003c\/li\u003e\n\u003cli\u003eTVs or streamers with analog line output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSystems requiring HDMI ARC, optical or USB input\u003c\/li\u003e\n\u003cli\u003eUsers needing a subwoofer output\u003c\/li\u003e\n\u003cli\u003eHeadphone listening\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBT20A powers passive speakers; it is not intended as an input for powered speakers.\u003c\/li\u003e\n\u003cli\u003eThe quoted 100 W × 2 is the manufacturer's maximum specification and depends on load and power supply.\u003c\/li\u003e\n\u003cli\u003eIt has no phono stage, so most turntables require a phono preamplifier or line-level output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media (max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important;margin-right:0!important}}.pbg__notes .emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0;\"\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioBT20A_003-00.webp?v=1758286545\" alt=\"Fosi Audio BT20A Bluetooth stereo amplifier\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioBT20A_005-00.webp?v=1758286545\" alt=\"Fosi Audio BT20A passive speaker system setup\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan it drive passive speakers directly?\u003c\/h3\u003e\u003cp\u003eYes. It supports 2–8 Ω passive speakers through the rear binding posts.\u003c\/p\u003e\u003ch3\u003eCan it connect to active speakers?\u003c\/h3\u003e\u003cp\u003eNo dedicated pre-output is provided. Use BT20A to power passive speakers.\u003c\/p\u003e\u003ch3\u003eDoes it have a subwoofer output?\u003c\/h3\u003e\u003cp\u003eNo.\u003c\/p\u003e\u003ch3\u003eCan I connect a turntable?\u003c\/h3\u003e\u003cp\u003eOnly when the turntable has a built-in phono stage or an external phono preamplifier is used.\u003c\/p\u003e\u003ch3\u003eDoes it support aptX?\u003c\/h3\u003e\u003cp\u003eThe official specification lists Bluetooth 5.0 but does not specify aptX support.\u003c\/p\u003e\u003ch3\u003eCan I connect a TV?\u003c\/h3\u003e\u003cp\u003eYes, when the TV provides compatible analog audio output; there is no optical or HDMI input.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eBluetooth speaker system\u003c\/h3\u003e\u003cp\u003eSource icon: phone\u003cbr\u003eSource: Phone \/ tablet\u003cbr\u003eConnection: Bluetooth 5.0\u003cbr\u003eOutput connection: Speaker terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Passive speakers\u003c\/p\u003e\u003ch3\u003eWired stereo system\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: Streamer \/ DAC \/ TV analog output\u003cbr\u003eConnection: RCA\u003cbr\u003eOutput connection: Speaker terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Passive speakers\u003c\/p\u003e\n\u003ch3\u003eTurntable stereo system\u003c\/h3\u003e\u003cp\u003eSource icon: turntable\u003cbr\u003eSource: Turntable with built-in phono stage or external phono preamplifier\u003cbr\u003eConnection: RCA line input\u003cbr\u003eOutput connection: Speaker terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Passive speakers\u003c\/p\u003e\u003cp\u003eNote: Do not connect a phono-level turntable directly unless a compatible phono preamplifier is used.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eInputs\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eBluetooth 5.0\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eRCA line input\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eOutputs\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eStereo speaker binding posts\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eAmplification\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eAmplifier Architecture\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eClass D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eAmplifier Chipset\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eDual TI TPA3116D2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eMaximum Output Power\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e100 W × 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSpeaker Impedance\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e2–8 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eFrequency Response\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e20 Hz–20 kHz (±1 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSNR\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e≥98 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eTHD\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e≤0.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eConnectivity and power\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eBluetooth Range\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eup to approximately 15 m \/ 50 ft without obstacles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eDC Input Range\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e12–24 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSupplied Power Adapter\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e24 V \/ 4.5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eComparison: BT20A or BT20A Pro?\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:520px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eBT20A\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eBT20A Pro\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eAmplifier chip\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eDual TPA3116D2\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eTPA3255\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eMaximum output\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e100 W × 2\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e300 W × 2 at 4 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003ePre-out\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e3.5 mm variable pre-out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eBest use\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eSimple compact stereo\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eHigher-output expandable stereo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ EU","offer_id":43721462186077,"sku":"Fosi-Audio-BT20A-Black-EU","price":78.08,"currency_code":"USD","in_stock":true},{"title":"Black \/ US","offer_id":43721462218845,"sku":"Fosi-Audio-BT20A-Black-US","price":79.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43672438833245,"sku":"Fosi-Audio-BT20A-Black-UK","price":79.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43721462153309,"sku":"Fosi-Audio-BT20A-Black-AU","price":79.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_BT20A_d330e9a2-7028-4099-a066-f2c1da41e853.webp?v=1785219705"},{"product_id":"fosi-audio-bt20a-pro","title":"Fosi Audio BT20A Pro","description":"\u003cp\u003eFosi Audio BT20A Pro is a compact Bluetooth stereo integrated amplifier built around the TI TPA3255 for passive speakers.\u003c\/p\u003e\u003cp\u003eIt adds RCA input, a variable 3.5 mm pre-out, bass and treble controls, replaceable op-amps and multiple power-supply options for a flexible desktop or room stereo system.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eTPA3255 stereo amplification\u003c\/h3\u003e\u003cp\u003eDelivers high-efficiency Class-D power with low specified distortion in a compact chassis.\u003c\/p\u003e\u003ch3\u003eVariable pre-out expansion\u003c\/h3\u003e\u003cp\u003eThe 3.5 mm pre-out can feed compatible powered speakers, a powered subwoofer or another amplifier.\u003c\/p\u003e\u003ch3\u003eReplaceable op-amps\u003c\/h3\u003e\u003cp\u003eSocketed NE5532 op-amps allow experienced users to tailor the analog stage with compatible DIP8 replacements.\u003c\/p\u003e\u003ch3\u003eFlexible power configurations\u003c\/h3\u003e\u003cp\u003eAvailable power-supply choices let buyers balance system output, size and cost.\u003c\/p\u003e\n\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDesktop and bookshelf passive-speaker systems\u003c\/li\u003e\n\u003cli\u003eCompact stereo systems with a powered subwoofer\u003c\/li\u003e\n\u003cli\u003eBluetooth and RCA source switching\u003c\/li\u003e\n\u003cli\u003eUsers interested in compatible op-amp rolling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSystems requiring HDMI ARC, optical or USB input\u003c\/li\u003e\n\u003cli\u003eUsers needing a headphone output\u003c\/li\u003e\n\u003cli\u003eTurntables without a phono preamplifier\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMaximum power depends on the selected supply and speaker load; choose the power-supply variant appropriate for the system.\u003c\/li\u003e\n\u003cli\u003eThe 3.5 mm connector is a pre-out, not a headphone jack.\u003c\/li\u003e\n\u003cli\u003eBluetooth takes input priority; disconnect Bluetooth when using RCA if the wired source is not heard.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media (max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important;margin-right:0!important}}.pbg__notes .emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0;\"\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_BT20A_PRO_002.webp?v=1758430247\" alt=\"Fosi Audio BT20A Pro TPA3255 stereo amplifier\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_BT20A_PRO_004.webp?v=1758430247\" alt=\"Fosi Audio BT20A Pro desktop listening setup\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_BT20A_PRO_007.webp?v=1758430247\" alt=\"Fosi Audio BT20A Pro stereo system connection\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan it power passive speakers?\u003c\/h3\u003e\u003cp\u003eYes. It supports 2–8 Ω passive speakers.\u003c\/p\u003e\u003ch3\u003eCan it connect to a powered subwoofer?\u003c\/h3\u003e\u003cp\u003eYes, through the variable 3.5 mm pre-out using the appropriate cable.\u003c\/p\u003e\u003ch3\u003eIs the pre-out a headphone output?\u003c\/h3\u003e\u003cp\u003eNo.\u003c\/p\u003e\u003ch3\u003eCan I connect a turntable?\u003c\/h3\u003e\u003cp\u003eYes only through a turntable with line output or an external phono stage.\u003c\/p\u003e\u003ch3\u003eDoes it support aptX?\u003c\/h3\u003e\u003cp\u003eNo. The official documentation specifies SBC\/AAC and states that aptX variants are not supported.\u003c\/p\u003e\u003ch3\u003eCan RCA and Bluetooth play simultaneously?\u003c\/h3\u003e\u003cp\u003eNo. Only one input mode is used at a time.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003ePassive speaker system\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: Streamer \/ DAC \/ phone\u003cbr\u003eConnection: RCA or Bluetooth\u003cbr\u003eOutput connection: Speaker terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Passive speakers\u003c\/p\u003e\u003ch3\u003e2.1 stereo system\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: Streamer \/ DAC\u003cbr\u003eConnection: RCA\u003cbr\u003eOutput connection: Speaker terminals + 3.5 mm pre-out\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Passive speakers + powered subwoofer\u003c\/p\u003e\n\u003ch3\u003ePre-out expansion system\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: Streamer \/ DAC \/ phone\u003cbr\u003eConnection: RCA or Bluetooth\u003cbr\u003eOutput connection: 3.5 mm variable pre-out\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Powered speakers, powered subwoofer or downstream amplifier\u003c\/p\u003e\u003cp\u003eNote: Confirm input compatibility and begin with the volume set low.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eInputs\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eBluetooth 5.0\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eRCA line input\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eOutputs\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eStereo speaker binding posts\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003e3.5 mm variable pre-out\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eAmplification\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eAmplifier Chip\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eTI TPA3255\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eMaximum Output Power\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e300 W × 2 at 4 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSpeaker Impedance\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e2–8 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eTHD\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e≤0.005%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSNR\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e≥108 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eFrequency Response\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e20 Hz–20 kHz (±1.2 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSocketed Op-Amps\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e2 × NE5532\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eConnectivity and power\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eBluetooth Codecs\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eSBC \/ AAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eBluetooth Range\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eup to 50 ft without obstacles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eDC Input Range\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e24–48 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003ePower Supply Options\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e32 V \/ 5 A or 48 V \/ 5 A, depending on variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eDimensions\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eapproximately 5 × 5 × 1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eComparison: BT20A or BT20A Pro?\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:520px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eBT20A\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eBT20A Pro\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eAmplifier chip\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eDual TPA3116D2\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eTPA3255\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eMaximum output\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e100 W × 2\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e300 W × 2 at 4 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003ePre-out\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e3.5 mm variable pre-out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eBest use\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eSimple compact stereo\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eHigher-output expandable stereo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Blue \/ 32V 5A","offer_id":43721477881949,"sku":"Fosi-Audio-BT20A-Pro-Blue-32V-5A","price":89.25,"currency_code":"USD","in_stock":true},{"title":"Blue \/ 48V 5A","offer_id":43721477914717,"sku":"Fosi-Audio-BT20A-Pro-Blue-48V-5A","price":105.9,"currency_code":"USD","in_stock":true},{"title":"Blue \/ 48V 5A GaN","offer_id":43721477947485,"sku":"Fosi-Audio-BT20A-Pro-Blue-48V-5A-GaN","price":105.9,"currency_code":"USD","in_stock":true},{"title":"Blue \/ No Power Supply","offer_id":43721477980253,"sku":"Fosi-Audio-BT20A-Pro-Blue-No-Power-Supply","price":105.9,"currency_code":"USD","in_stock":true},{"title":"Gray \/ 32V 5A","offer_id":43669225373789,"sku":"Fosi-Audio-BT20A-Pro-Gray-32V-5A","price":105.9,"currency_code":"USD","in_stock":true},{"title":"Gray \/ 48V 5A","offer_id":43669231763549,"sku":"Fosi-Audio-BT20A-Pro-Gray-48V-5A","price":112.53,"currency_code":"USD","in_stock":true},{"title":"Gray \/ 48V 5A GaN","offer_id":43669231796317,"sku":"Fosi-Audio-BT20A-Pro-Gray-48V-5A-GaN","price":119.9,"currency_code":"USD","in_stock":true},{"title":"Gray \/ No Power Supply","offer_id":43669231829085,"sku":"Fosi-Audio-BT20A-Pro-Gray-No-Power-Supply","price":93.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_BT20A_Pro_09d9b862-6793-4e97-b13b-60a3cdaefd39.webp?v=1785219705"},{"product_id":"fosi-q6","title":"Fosi Audio Q6","description":"\u003cp\u003eFosi Audio Q6 is a compact fixed-output desktop DAC for converting USB-C, optical or coaxial digital sources to RCA analog audio and sub-out.\u003c\/p\u003e\u003cp\u003eIts AK4493S and XMOS XU316 chipset supports PCM 32-bit\/768kHz and DSD512 over USB while delivering 121dB SNR for a clean stereo system upgrade.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eAKM desktop conversion\u003c\/h3\u003e\u003cp\u003eThe AK4493S DAC and premium supporting chipset target high-resolution, low-distortion stereo playback.\u003c\/p\u003e\u003ch3\u003eHigh-resolution USB audio\u003c\/h3\u003e\u003cp\u003eUSB supports PCM up to 32-bit\/768kHz and native DSD512.\u003c\/p\u003e\u003ch3\u003eThree digital source inputs\u003c\/h3\u003e\u003cp\u003eUSB-C, optical and coaxial connect computers, TVs, streamers and CD transports.\u003c\/p\u003e\u003ch3\u003eRCA plus sub-out\u003c\/h3\u003e\u003cp\u003eAnalog RCA and sub-out simplify stereo or 2.1 integration.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDigital streamers and CD transports\u003c\/li\u003e\n\u003cli\u003eComputer-based HiFi systems\u003c\/li\u003e\n\u003cli\u003eTV optical PCM into an amplifier\u003c\/li\u003e\n\u003cli\u003eFixed-output DAC systems with downstream volume control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHeadphone listening without a separate headphone amplifier\u003c\/li\u003e\n\u003cli\u003eUsers needing built-in volume control or preamplification\u003c\/li\u003e\n\u003cli\u003eAnalog sources such as turntables\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"grid-column:1 \/ -1;width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioQ6005_19094bd9-8519-4e03-957f-83e2b532278d.webp?v=1758594121\" alt=\"Fosi Audio Q6 AK4493S desktop DAC high-resolution audio performance\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioQ6007_3f2523f7-bd5c-4ac7-9884-c5b65fdaafd2.webp?v=1758594121\" alt=\"Fosi Audio Q6 USB-C, optical, coaxial, RCA and sub-out connections\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioQ6006_4b24e781-f3e0-4d99-b879-3b8ccb151df4.webp?v=1758594121\" alt=\"Fosi Audio Q6 computer, streamer, amplifier and powered subwoofer setup\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eQ6 is a fixed-output DAC, not a preamplifier; control volume downstream.\u003c\/li\u003e\n\u003cli\u003eIt has no headphone output and requires an amplifier, headphone amp or powered speakers.\u003c\/li\u003e\n\u003cli\u003eThe sub-out is line level and requires a powered subwoofer.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan Q6 drive headphones?\u003c\/h3\u003e\u003cp\u003eNo. Add a separate headphone amplifier.\u003c\/p\u003e\u003ch3\u003eDoes it control volume?\u003c\/h3\u003e\u003cp\u003eNo. It is a fixed-output DAC, so use an amplifier, preamp or powered-speaker volume control.\u003c\/p\u003e\u003ch3\u003eCan it connect to a turntable?\u003c\/h3\u003e\u003cp\u003eNo. It accepts digital inputs only.\u003c\/p\u003e\u003ch3\u003eCan it connect to a TV?\u003c\/h3\u003e\u003cp\u003eYes, by optical or coaxial PCM audio.\u003c\/p\u003e\u003ch3\u003eWhat does sub-out connect to?\u003c\/h3\u003e\u003cp\u003eA powered subwoofer with a compatible line input.\u003c\/p\u003e\u003ch3\u003eDoes USB support DSD?\u003c\/h3\u003e\u003cp\u003eYes, up to DSD512 from a compatible source and playback setup.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eStreamer system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Digital streamer\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Optical or coaxial\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e RCA\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Integrated amplifier\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Control volume at the amplifier.\u003c\/p\u003e\u003ch3\u003eComputer HiFi\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e PC, Mac or tablet\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB-C audio\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e RCA\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Amplifier or powered speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use compatible USB playback settings.\u003c\/p\u003e\u003ch3\u003e2.1 system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Digital source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB, optical or coaxial\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e RCA + sub-out\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Amplifier + powered subwoofer\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Q6 output is fixed; manage levels downstream.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAudio performance\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDAC \/ USB chipset\u003c\/td\u003e\n\u003ctd\u003eAK4493S \/ XMOS XU316\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB maximum\u003c\/td\u003e\n\u003ctd\u003ePCM 32-bit \/ 768kHz; DSD512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical \/ coaxial\u003c\/td\u003e\n\u003ctd\u003eUp to 32-bit \/ 192kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSNR \/ Dynamic range\u003c\/td\u003e\n\u003ctd\u003e≥121dB \/ 121dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.00012%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eConnections and power\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eUSB-C, optical, coaxial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003eRCA, sub-out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther components\u003c\/td\u003e\n\u003ctd\u003eOPA1612, NE5532DR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply\u003c\/td\u003e\n\u003ctd\u003e5V \/ 2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume control\u003c\/td\u003e\n\u003ctd\u003eNo; fixed output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSetup\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStreamer system\u003c\/td\u003e\n\u003ctd\u003eStreamer → Q6 → Integrated amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComputer system\u003c\/td\u003e\n\u003ctd\u003eComputer → Q6 → Powered speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.1 system\u003c\/td\u003e\n\u003ctd\u003eDigital source → Q6 → Amplifier + powered subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eFosi Audio product comparison\u003c\/h3\u003e\u003cp\u003eCompare the models by the differences that most affect system matching and everyday use.\u003c\/p\u003e\u003cdiv style=\"max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"min-width:860px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"min-width:150px;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eQ6\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eQ4\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eZD3\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct position\u003c\/th\u003e\n\u003ctd\u003eFixed-output stereo DAC\u003c\/td\u003e\n\u003ctd\u003eDAC + headphone amp \/ volume control\u003c\/td\u003e\n\u003ctd\u003eBalanced DAC \/ preamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDAC chip\u003c\/th\u003e\n\u003ctd\u003eAK4493S\u003c\/td\u003e\n\u003ctd\u003e97220-based chipset\u003c\/td\u003e\n\u003ctd\u003eES9039Q2M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUSB maximum\u003c\/th\u003e\n\u003ctd\u003e32-bit \/ 768kHz, DSD512\u003c\/td\u003e\n\u003ctd\u003e24-bit \/ 96kHz\u003c\/td\u003e\n\u003ctd\u003e32-bit \/ 768kHz, DSD512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOther inputs\u003c\/th\u003e\n\u003ctd\u003eOptical, coaxial\u003c\/td\u003e\n\u003ctd\u003eOptical, coaxial\u003c\/td\u003e\n\u003ctd\u003eHDMI ARC, optical, coaxial, Bluetooth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAnalog outputs\u003c\/th\u003e\n\u003ctd\u003eRCA, sub-out\u003c\/td\u003e\n\u003ctd\u003eRCA\u003c\/td\u003e\n\u003ctd\u003eRCA, XLR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeadphone output\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVolume control\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes with bypass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBalanced output\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes, XLR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSNR\u003c\/th\u003e\n\u003ctd\u003e≥121dB\u003c\/td\u003e\n\u003ctd\u003e≥105dB\u003c\/td\u003e\n\u003ctd\u003e≥126dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBest use\u003c\/th\u003e\n\u003ctd\u003eSimple high-performance DAC\u003c\/td\u003e\n\u003ctd\u003eEntry headphones and desktop\u003c\/td\u003e\n\u003ctd\u003eFlexible balanced TV\/HiFi hub\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43673807388765,"sku":"Fosi-Audio-Q6-Black-US","price":105.48,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43673811583069,"sku":"Fosi-Audio-Q6-Black-EU","price":85.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43673811615837,"sku":"Fosi-Audio-Q6-Black-AU","price":85.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43673811648605,"sku":"Fosi-Audio-Q6-Black-UK","price":85.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_Q6_0dca49c2-a71e-4299-9803-f7e058304346.webp?v=1785380487"},{"product_id":"fosi-mc331","title":"Fosi Audio MC331","description":"\u003cp\u003eFosi Audio MC331 is a compact tube integrated amplifier combining digital and analog source selection, speaker amplification, headphone listening and preamplifier output.\u003c\/p\u003e\u003cp\u003eIts replaceable tubes, illuminated VU meter, remote control and 105W × 2 maximum output at 4Ω make it a flexible desktop or bookshelf-speaker hub.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eAll-in-one audio hub\u003c\/h3\u003e\u003cp\u003eCombines a DAC, integrated speaker amplifier, preamplifier and headphone amplifier in one compact chassis.\u003c\/p\u003e\u003ch3\u003eFive source inputs\u003c\/h3\u003e\u003cp\u003eAccepts Bluetooth, USB, optical, coaxial and RCA sources with remote input switching.\u003c\/p\u003e\u003ch3\u003eTube character with visual appeal\u003c\/h3\u003e\u003cp\u003eReplaceable 5654W-family tubes and a warm VU meter add adjustable tube character and a retro presentation.\u003c\/p\u003e\u003ch3\u003eFlexible system expansion\u003c\/h3\u003e\u003cp\u003eDrives passive speakers while pre-out and 3.5mm headphone outputs support additional listening configurations.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDesktop and small-room passive speaker systems\u003c\/li\u003e\n\u003cli\u003eUsers switching between computer, TV, Bluetooth and analog sources\u003c\/li\u003e\n\u003cli\u003eHeadphone and speaker listening from one compact component\u003c\/li\u003e\n\u003cli\u003eListeners who enjoy replaceable tubes and VU-meter styling\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTurntables without a built-in or external phono preamp\u003c\/li\u003e\n\u003cli\u003eSystems requiring HDMI ARC\u003c\/li\u003e\n\u003cli\u003ePassive subwoofers that need a dedicated powered subwoofer channel\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosioAudioMC331003.webp?v=1758366705\" alt=\"Fosi Audio MC331 tube integrated amplifier power and core performance\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosioAudioMC331006.webp?v=1758366705\" alt=\"Fosi Audio MC331 Bluetooth, USB, optical, coaxial and RCA connections\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosioAudioMC331005.webp?v=1758366705\" alt=\"Fosi Audio MC331 passive speaker, headphone and powered subwoofer system scenarios\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMC331 is an integrated amplifier and can directly drive 4–8Ω passive speakers.\u003c\/li\u003e\n\u003cli\u003eIts RCA input is line level; a conventional turntable requires a phono preamp.\u003c\/li\u003e\n\u003cli\u003ePre-out is for an active subwoofer or downstream amplifier; it is not a passive subwoofer output.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan MC331 drive passive speakers directly?\u003c\/h3\u003e\u003cp\u003eYes. Connect 4–8Ω passive speakers to its speaker terminals.\u003c\/p\u003e\u003ch3\u003eDoes it include a phono input?\u003c\/h3\u003e\u003cp\u003eNo. A turntable needs a built-in phono stage or a separate phono preamp before the RCA input.\u003c\/p\u003e\u003ch3\u003eCan I connect a TV?\u003c\/h3\u003e\u003cp\u003eYes, through optical, coaxial or RCA audio output. MC331 does not provide HDMI ARC.\u003c\/p\u003e\u003ch3\u003eCan I use headphones?\u003c\/h3\u003e\u003cp\u003eYes. It includes a front 3.5mm headphone output.\u003c\/p\u003e\u003ch3\u003eCan I add a subwoofer?\u003c\/h3\u003e\u003cp\u003eYes. Use pre-out with a powered subwoofer or another compatible downstream device.\u003c\/p\u003e\u003ch3\u003eAre the tubes replaceable?\u003c\/h3\u003e\u003cp\u003eYes. Officially listed compatible families include 6AK5, 6AK5W, 6Zh1P and 6J1.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003ePassive speaker system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Phone, computer, TV or line-level source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Bluetooth, USB, optical, coaxial or RCA\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e 4–8Ω passive speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Select the matching input and begin at low volume.\u003c\/p\u003e\u003ch3\u003eHeadphone setup\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Digital or analog source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Bluetooth, USB, optical, coaxial or RCA\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e 3.5mm headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Disconnect or lower speaker output before private listening.\u003c\/p\u003e\u003ch3\u003e2.1 system with powered subwoofer\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Digital or analog source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Chosen source input\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals + pre-out\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Passive speakers + powered subwoofer\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use the subwoofer's own level and crossover controls for integration.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eCore specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eTube integrated DAC \/ amplifier \/ headphone amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum speaker output\u003c\/td\u003e\n\u003ctd\u003e105W × 2 at 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeaker impedance\u003c\/td\u003e\n\u003ctd\u003e4–8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e≤0.03%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSNR\u003c\/td\u003e\n\u003ctd\u003e≥100dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply\u003c\/td\u003e\n\u003ctd\u003e24V \/ 4.5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eInputs and outputs\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eBluetooth, USB, optical, coaxial, RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003ePassive speaker terminals, pre-out, 3.5mm headphone output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth codecs\u003c\/td\u003e\n\u003ctd\u003eSBC, AAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplaceable tubes\u003c\/td\u003e\n\u003ctd\u003e6AK5, 6AK5W, 6Zh1P, 6J1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSetup\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesktop speakers\u003c\/td\u003e\n\u003ctd\u003ePC → USB → MC331 → Passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTV audio\u003c\/td\u003e\n\u003ctd\u003eTV optical output → MC331 → Passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.1 system\u003c\/td\u003e\n\u003ctd\u003eSource → MC331 → Passive speakers + powered subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eFosi Audio product comparison\u003c\/h3\u003e\u003cp\u003eCompare the two compact Fosi Audio integrated amplifiers by the differences that most affect system matching.\u003c\/p\u003e\u003cdiv style=\"max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"min-width:760px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"min-width:150px;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eMC331\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eMC351\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct position\u003c\/th\u003e\n\u003ctd\u003eTube DAC \/ integrated stereo amplifier\u003c\/td\u003e\n\u003ctd\u003eHigh-power 2.1 digital integrated amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBuilt-in speaker amplifier\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum output\u003c\/th\u003e\n\u003ctd\u003e105W × 2 at 4Ω\u003c\/td\u003e\n\u003ctd\u003e165W × 2 + 350W at 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMain inputs\u003c\/th\u003e\n\u003ctd\u003eBluetooth, USB, optical, coaxial, RCA\u003c\/td\u003e\n\u003ctd\u003eBluetooth 5.3, USB, optical, coaxial, RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpeaker output\u003c\/th\u003e\n\u003ctd\u003eStereo passive speakers\u003c\/td\u003e\n\u003ctd\u003eStereo passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePassive subwoofer output\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes, dedicated amplified output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLine-level pre-out\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeadphone output\u003c\/th\u003e\n\u003ctd\u003eYes, 3.5mm\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTube stage\u003c\/th\u003e\n\u003ctd\u003eYes, replaceable tubes\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBest use\u003c\/th\u003e\n\u003ctd\u003eCompact tube stereo and headphone system\u003c\/td\u003e\n\u003ctd\u003ePowerful passive-speaker 2.1 system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43673909035101,"sku":"Fosi-Audio-MC331-Black-US","price":143.77,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43673909067869,"sku":"Fosi-Audio-MC331-Black-EU","price":129.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43673909100637,"sku":"Fosi-Audio-MC331-Black-AU","price":129.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43673909133405,"sku":"Fosi-Audio-MC331-Black-UK","price":129.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_MC331_f0e033c2-3c7e-4420-a18f-ed97a2880999.webp?v=1785378303"},{"product_id":"fosi-gr40","title":"Fosi Audio GR40","description":"\u003cp\u003eFosi Audio GR40 is a desktop tube DAC, headphone amplifier and preamplifier for digital and Bluetooth sources.\u003c\/p\u003e\u003cp\u003eUSB, optical, coaxial and Bluetooth inputs, replaceable 5654W tubes, tone controls and RCA pre-output make it a flexible centerpiece for headphones or powered audio systems.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eMulti-input desktop DAC\u003c\/h3\u003e\u003cp\u003eAccepts USB, optical, coaxial and Bluetooth sources in one compact component.\u003c\/p\u003e\u003ch3\u003eTube analog stage\u003c\/h3\u003e\u003cp\u003eTwo replaceable 5654W tubes add tube-based amplification and visual character.\u003c\/p\u003e\u003ch3\u003eHeadphone and preamp operation\u003c\/h3\u003e\u003cp\u003eUse the front 3.5mm headphone output or feed powered speakers and power amplifiers from RCA.\u003c\/p\u003e\u003ch3\u003eHigh-resolution and codec support\u003c\/h3\u003e\u003cp\u003eSupports PCM 32-bit\/384kHz, DSD256 and Bluetooth codecs including aptX HD and aptX LL.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDesktop headphone listening\u003c\/li\u003e\n\u003cli\u003eTVs with optical audio output\u003c\/li\u003e\n\u003cli\u003eComputers using USB audio\u003c\/li\u003e\n\u003cli\u003ePowered speakers or separate power amplifiers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirectly driving passive speakers\u003c\/li\u003e\n\u003cli\u003eBalanced headphone or XLR systems\u003c\/li\u003e\n\u003cli\u003eTurntables without a phono preamplifier\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGR40 is not a speaker power amplifier; passive speakers require a separate power amplifier.\u003c\/li\u003e\n\u003cli\u003eThe RCA output is muted when headphones are connected.\u003c\/li\u003e\n\u003cli\u003eAllow the tubes to cool before removal and only use officially compatible replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media(max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important}}.emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0\"\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioGR40002.webp?v=1758425472\" alt=\"Tube Preamp\/Headphone Amp with DAC\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioGR40003.webp?v=1758425473\" alt=\"Fosi Audio GR40\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioGR40006.webp?v=1758425472\" alt=\"Fosi Audio GR40\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan GR40 power passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. Connect its RCA output to a separate power amplifier or use powered speakers.\u003c\/p\u003e\u003ch3\u003eCan it connect to a TV?\u003c\/h3\u003e\u003cp\u003eYes, through a compatible optical or coaxial digital output.\u003c\/p\u003e\u003ch3\u003eDoes it include a phono input?\u003c\/h3\u003e\u003cp\u003eNo. A turntable requires a built-in or external phono preamplifier.\u003c\/p\u003e\u003ch3\u003eWhich headphones are supported?\u003c\/h3\u003e\u003cp\u003eThe official range is 32–300Ω through the 3.5mm output.\u003c\/p\u003e\u003ch3\u003eCan the tubes be replaced?\u003c\/h3\u003e\u003cp\u003eYes, but only with compatible tube types and after the unit is powered off and cool.\u003c\/p\u003e\u003ch3\u003eWhat Bluetooth codecs are supported?\u003c\/h3\u003e\u003cp\u003eSBC, AAC, aptX, aptX HD and aptX LL are listed in the manual.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eComputer headphone system\u003c\/h3\u003e\u003cp\u003eSource icon: computer\u003cbr\u003eSource: Windows PC \/ Mac\u003cbr\u003eConnection: USB audio\u003cbr\u003eOutput connection: 3.5mm headphone output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Wired headphones\u003c\/p\u003e\u003ch3\u003eTV headphone system\u003c\/h3\u003e\u003cp\u003eSource icon: tv\u003cbr\u003eSource: TV\u003cbr\u003eConnection: Optical or coaxial PCM\u003cbr\u003eOutput connection: 3.5mm headphone output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Wired headphones\u003c\/p\u003e\u003ch3\u003ePowered speaker or amplifier system\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: Digital source \/ Bluetooth device\u003cbr\u003eConnection: USB, optical, coaxial or Bluetooth\u003cbr\u003eOutput connection: RCA pre-output\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Powered speakers or separate power amplifier\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eInputs and outputs\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eInputs\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003eUSB; optical; coaxial; Bluetooth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eOutputs\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003eRCA pre-output; 3.5mm headphone output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eChannels\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eTube complement\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e2 × 5654W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eDigital and headphone performance\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eMaximum resolution\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003ePCM 32-bit \/ 384kHz; DSD256\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eBluetooth\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e5.1; SBC, AAC, aptX, aptX HD, aptX LL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eHeadphone impedance\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e32–300Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eOutput power\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e300mW @ 16Ω; 250mW @ 32Ω; 50mW @ 250Ω; 40mW @ 300Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eSNR\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e≥103dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003ePower input\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003eDC 12V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eComparison: Which Fosi Audio model is right for you?\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:680px\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eGR40\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eGR70\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eK7\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eProduct position\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eTube DAC \/ headphone amp \/ preamp\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eAnalog tube headphone amp \/ preamp\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBalanced digital DAC \/ headphone amp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDigital inputs\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eUSB, optical, coaxial, Bluetooth\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eNone\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eUSB, optical, coaxial, Bluetooth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHeadphone outputs\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e3.5mm and 6.35mm\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e3.5mm and 4.4mm balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eSpeaker-system output\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eRCA pre-out\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eRCA pre-out\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eRCA line output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBest use\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDigital sources with tube stage\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eAnalog tube headphone system\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHigh-output HiFi and gaming\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43673939738717,"sku":"Fosi-Audio-GR40-Black-US","price":137.42,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43673939771485,"sku":"Fosi-Audio-GR40-Black-EU","price":119.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43673939804253,"sku":"Fosi-Audio-GR40-Black-AU","price":119.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43673939837021,"sku":"Fosi-Audio-GR40-Black-UK","price":119.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_GR40.webp?v=1784631194"},{"product_id":"fosi-box-x5","title":"Fosi Audio Box X5","description":"\u003cp\u003eFosi Audio Box X5 is a compact phono preamplifier for moving-magnet and moving-coil turntable cartridges.\u003c\/p\u003e\u003cp\u003eFour selectable gain settings, precise RIAA equalization and low-noise components make it a flexible upgrade between a turntable and a line-level amplifier or powered speakers.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\n\u003ch3\u003eMM and MC cartridge support\u003c\/h3\u003e\u003cp\u003eA front-panel cartridge selector and 38 \/ 48 \/ 56 \/ 66 dB gain settings accommodate a broad range of phono cartridges.\u003c\/p\u003e\n\u003ch3\u003ePrecision analog signal path\u003c\/h3\u003e\u003cp\u003eOPA1612 amplification, precision film components and gold-plated RCA connections are designed for accurate, low-noise vinyl playback.\u003c\/p\u003e\n\u003ch3\u003eSimple system integration\u003c\/h3\u003e\u003cp\u003eDedicated RCA input, RCA output and grounding terminal provide a straightforward connection between a turntable and a line-level audio system.\u003c\/p\u003e\n\u003ch3\u003eLow-noise, user-friendly analog design\u003c\/h3\u003e\u003cp\u003eAn aluminum chassis, one-touch controls and dedicated grounding support make setup straightforward while helping preserve a clean phono signal.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTurntables with MM or MC cartridges\u003c\/li\u003e\n\u003cli\u003eVinyl systems without a built-in phono stage\u003c\/li\u003e\n\u003cli\u003eUpgrading an entry-level integrated phono preamp\u003c\/li\u003e\n\u003cli\u003eCompact desktop or living-room analog systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTurntables that only provide USB audio\u003c\/li\u003e\n\u003cli\u003eUsers needing Bluetooth or digital inputs\u003c\/li\u003e\n\u003cli\u003eDirectly driving passive speakers or headphones\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBox X5 is a phono preamplifier, not a speaker power amplifier.\u003c\/li\u003e\n\u003cli\u003eConnect its RCA output to a line-level AUX input, powered speakers or a separate amplifier; do not connect it to another PHONO input.\u003c\/li\u003e\n\u003cli\u003eSelect MM\/MC mode and gain according to the cartridge manufacturer's output specification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media (max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important;margin-right:0!important}}.pbg__notes .emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0;\"\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/BOXx5002.webp?v=1758442694\" alt=\"Fosi Audio Box X5 MM and MC phono preamplifier\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/BOXx5007.webp?v=1758442694\" alt=\"Fosi Audio Box X5 front and rear connections\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/BOXx5008.webp?v=1758442694\" alt=\"Fosi Audio Box X5 turntable connection diagram\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eDoes Box X5 support both MM and MC cartridges?\u003c\/h3\u003e\u003cp\u003eYes. It provides selectable MM\/MC operation and four gain settings.\u003c\/p\u003e\n\u003ch3\u003eDoes it include Bluetooth, USB or optical input?\u003c\/h3\u003e\u003cp\u003eNo. Box X5 is an analog phono stage with RCA phono input and RCA line output.\u003c\/p\u003e\n\u003ch3\u003eCan it power passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. A separate power amplifier or powered speakers are required.\u003c\/p\u003e\n\u003ch3\u003eCan it be connected to powered speakers?\u003c\/h3\u003e\u003cp\u003eYes, provided the speakers have a compatible analog line input and their own volume control.\u003c\/p\u003e\n\u003ch3\u003eShould I connect the turntable ground wire?\u003c\/h3\u003e\u003cp\u003eYes, when the turntable provides one. Proper grounding helps reduce hum.\u003c\/p\u003e\n\u003ch3\u003eCan it be used as a normal line-level preamplifier?\u003c\/h3\u003e\u003cp\u003eNo. Its gain and RIAA equalization are designed specifically for phono cartridges.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\n\u003ch3\u003eTurntable to integrated amplifier\u003c\/h3\u003e\u003cp\u003eSource icon: turntable\u003cbr\u003eSource: MM or MC turntable\u003cbr\u003eConnection: RCA phono input + ground\u003cbr\u003eOutput connection: RCA line output\u003cbr\u003eTarget icon: amplifier\u003cbr\u003eOutput: AUX \/ line input on an integrated amplifier\u003c\/p\u003e\u003cp\u003eNote: Do not connect the Box X5 output to another PHONO input.\u003c\/p\u003e\n\u003ch3\u003eTurntable to powered speakers\u003c\/h3\u003e\u003cp\u003eSource icon: turntable\u003cbr\u003eSource: MM or MC turntable\u003cbr\u003eConnection: RCA phono input + ground\u003cbr\u003eOutput connection: RCA line output\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Powered speakers with analog input\u003c\/p\u003e\n\u003ch3\u003eTurntable to headphone system\u003c\/h3\u003e\u003cp\u003eSource icon: turntable\u003cbr\u003eSource: MM or MC turntable\u003cbr\u003eConnection: RCA phono input + ground\u003cbr\u003eOutput connection: RCA line output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Headphone amplifier connected to headphones\u003c\/p\u003e\u003cp\u003eNote: Box X5 does not include a headphone amplifier; connect its line output to a separate headphone amplifier.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eInputs and outputs\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eMM \/ MC RCA phono input\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eRCA line output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eTurntable grounding terminal\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eAudio performance\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eGain\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e38 \/ 48 \/ 56 \/ 66 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eFrequency Response\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e20 Hz–20 kHz (±0.015 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eTHD\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e≤0.009%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSNR\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e≥92 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eOperational Amplifier\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eOPA1612\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003ePhysical and power\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eDimensions\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e4.1 × 6.5 × 1.4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003ePower Supply\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e16 V \/ 1 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43721593421917,"sku":"Fosi-Audio-Box-X5-Black-US","price":111.77,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43721593454685,"sku":"Fosi-Audio-Box-X5-Black-EU","price":109.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43721593487453,"sku":"Fosi-Audio-Box-X5-Black-UK","price":109.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43721593520221,"sku":"Fosi-Audio-Box-X5-Black-AU","price":109.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_Box_X5_00f87f82-b428-4fbc-8805-a33e85b96886.webp?v=1785219706"},{"product_id":"fosi-v3","title":"Fosi Audio V3","description":"\n\u003cp\u003eThis Fosi Audio V3 listing is for the V3 Mono compact monoblock power amplifier, sold in single-amp and stereo-pair configurations depending on the selected variant.\u003c\/p\u003e\u003cp\u003eIts TPA3255-based architecture, XLR balanced\/RCA inputs and 240W rated mono output support scalable, high-power passive-speaker systems.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003cp\u003eFour reasons this product deserves a place in a well-planned audio system.\u003c\/p\u003e\u003ch3\u003eTrue Monoblock Architecture\u003c\/h3\u003e\u003cp\u003eEach V3 Mono amplifies one audio channel, allowing separate left\/right amplification in a stereo pair.\u003c\/p\u003e\u003ch3\u003eXLR Balanced and RCA Inputs\u003c\/h3\u003e\u003cp\u003eThe selectable input formats make integration practical with balanced preamps, DACs and conventional RCA sources.\u003c\/p\u003e\u003ch3\u003e240W Rated Mono Output\u003c\/h3\u003e\u003cp\u003eStrong single-channel output supports demanding compatible passive speakers when correctly powered.\u003c\/p\u003e\u003ch3\u003eScalable Power Options\u003c\/h3\u003e\u003cp\u003eVariants include amplifier-only and power-supply bundles, including configurations for one or two monoblocks.\u003c\/p\u003e\n\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStereo systems using two monoblock amplifiers\u003c\/li\u003e\n\u003cli\u003eBalanced XLR preamp or DAC systems\u003c\/li\u003e\n\u003cli\u003eCompact high-power passive-speaker installations\u003c\/li\u003e\n\u003cli\u003eUsers planning a modular amplifier upgrade\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBuyers expecting one unit to power both stereo channels\u003c\/li\u003e\n\u003cli\u003eUsers without a preamp, DAC or source with volume control\u003c\/li\u003e\n\u003cli\u003eHeadphone or powered-speaker systems\u003c\/li\u003e\n\u003cli\u003eBuyers who have not checked whether their selected variant includes a power supply\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"emiuzek-product-content-images\" style=\"width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/V3004.jpg?v=1758448370\" alt=\"Fosi Audio V3 Mono 240W rated power output\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/V3002.jpg?v=1758448370\" alt=\"Fosi Audio V3 Mono XLR balanced and RCA input connections\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/V3009.jpg?v=1758448370\" alt=\"Fosi Audio V3 Mono monoblock power amplifier in a home HiFi system\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThis product is V3 Mono: one amplifier powers one speaker channel; two units are required for conventional stereo.\u003c\/li\u003e\n\u003cli\u003eCheck the selected variant carefully because amplifier quantity and included power supply differ.\u003c\/li\u003e\n\u003cli\u003eUse a preamp, DAC or source with suitable volume control; V3 Mono is a power amplifier, not a complete source device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eDo I need one or two V3 Mono amplifiers?\u003c\/h3\u003e\u003cp\u003eOne unit powers one channel. A standard two-channel stereo system requires two monoblocks.\u003c\/p\u003e\u003ch3\u003eDoes every variant include a power supply?\u003c\/h3\u003e\u003cp\u003eNo. The listing includes amplifier-only and power-supply bundle options; verify the selected variant.\u003c\/p\u003e\u003ch3\u003eCan it connect to an XLR source?\u003c\/h3\u003e\u003cp\u003eYes. It supports balanced XLR input as well as RCA input.\u003c\/p\u003e\u003ch3\u003eCan it drive headphones?\u003c\/h3\u003e\u003cp\u003eNo. It is a passive-speaker power amplifier and has no headphone output.\u003c\/p\u003e\u003ch3\u003eDoes it include Bluetooth or a DAC?\u003c\/h3\u003e\u003cp\u003eNo. Connect a compatible external preamp, DAC or streamer.\u003c\/p\u003e\u003ch3\u003eCan I use one 48V\/10A supply with two units?\u003c\/h3\u003e\u003cp\u003eA listed two-amplifier bundle is available with a 48V\/10A supply; use only the configuration and cabling supplied or specified for that variant.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eBalanced stereo system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Balanced DAC \/ preamp\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e XLR to each monoblock\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e One passive speaker per V3 Mono\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use two units for left and right channels.\u003c\/p\u003e\u003ch3\u003eRCA stereo system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e RCA preamp \/ controlled DAC\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e RCA to each monoblock\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e One passive speaker per V3 Mono\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Split left and right outputs to separate units.\u003c\/p\u003e\u003ch3\u003eSingle-channel system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Mono source \/ preamp channel\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e XLR or RCA\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e One passive speaker\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e One unit powers one channel only.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAmplifier\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eMono Class D power amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAmplifier Chip\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTI TPA3255\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRated Output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e240W mono\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eChannels per Unit\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eConnectivity\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eXLR balanced; RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eOutput\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePassive speaker binding posts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eInput Selection\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBalanced \/ RCA selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eHeadphone Output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003ePower and Design\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePower Options\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eVariant-dependent: no PSU, 48V\/5A or 48V\/10A bundles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eCooling\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eFull-body heat-dissipation chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSystem Requirement\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePreamp or source with volume control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSetup\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBalanced stereo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBalanced DAC\/preamp → two V3 Mono amps → passive speaker pair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRCA stereo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRCA preamp → two V3 Mono amps → passive speaker pair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSingle channel\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eMono line source → one V3 Mono → one passive speaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eV3 Mono\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eZA3\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eV3 Stereo\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAmplifier Format\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eMonoblock\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eStereo \/ mono-capable\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eStereo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eChannels per Unit\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e1\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e2 stereo or 1 mono\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAmplifier Chip\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTPA3255\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTPA3255\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTPA3255\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eXLR balanced, RCA\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eXLR balanced, RCA\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRated \/ Maximum Positioning\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e240W rated mono\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eHigh-power stereo\/mono\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e300W x2 maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eStereo Units Required\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e2\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e1 in stereo mode\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePre-out\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSubwoofer output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e3.5mm pre-out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTone Controls\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBest Use\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDedicated monoblock stereo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eFlexible balanced amp\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSimple RCA stereo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ V3 MONO*1(No Power Supply Unit) \/ US","offer_id":43721606266973,"sku":"Fosi-Audio-V3-Black-V3-MONO-1-No-Power-Supply-Unit-US","price":109.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*1(No Power Supply Unit) \/ EU","offer_id":43721606299741,"sku":"Fosi-Audio-V3-Black-V3-MONO-1-No-Power-Supply-Unit-EU","price":109.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*1(No Power Supply Unit) \/ AU","offer_id":43721606332509,"sku":"Fosi-Audio-V3-Black-V3-MONO-1-No-Power-Supply-Unit-AU","price":109.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*1(No Power Supply Unit) \/ UK","offer_id":43721606365277,"sku":"Fosi-Audio-V3-Black-V3-MONO-1-No-Power-Supply-Unit-UK","price":109.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*1+48V\/5A PSU*1 \/ US","offer_id":43721606398045,"sku":"Fosi-Audio-V3-Black-V3-MONO-1-48V-5A-PSU-1-US","price":139.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*1+48V\/5A PSU*1 \/ EU","offer_id":43721606430813,"sku":"Fosi-Audio-V3-Black-V3-MONO-1-48V-5A-PSU-1-EU","price":139.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*1+48V\/5A PSU*1 \/ AU","offer_id":43721606463581,"sku":"Fosi-Audio-V3-Black-V3-MONO-1-48V-5A-PSU-1-AU","price":139.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*1+48V\/5A PSU*1 \/ UK","offer_id":43721606496349,"sku":"Fosi-Audio-V3-Black-V3-MONO-1-48V-5A-PSU-1-UK","price":139.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*1+48V\/10A PSU*1 \/ US","offer_id":43721606529117,"sku":"Fosi-Audio-V3-Black-V3-MONO-1-48V-10A-PSU-1-US","price":209.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*1+48V\/10A PSU*1 \/ EU","offer_id":43721606561885,"sku":"Fosi-Audio-V3-Black-V3-MONO-1-48V-10A-PSU-1-EU","price":209.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*1+48V\/10A PSU*1 \/ AU","offer_id":43721606594653,"sku":"Fosi-Audio-V3-Black-V3-MONO-1-48V-10A-PSU-1-AU","price":209.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*1+48V\/10A PSU*1 \/ UK","offer_id":43721606627421,"sku":"Fosi-Audio-V3-Black-V3-MONO-1-48V-10A-PSU-1-UK","price":209.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*2+48V\/10A PSU*1 \/ US","offer_id":43721606660189,"sku":"Fosi-Audio-V3-Black-V3-MONO-2-48V-10A-PSU-1-US","price":279.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*2+48V\/10A PSU*1 \/ EU","offer_id":43721606692957,"sku":"Fosi-Audio-V3-Black-V3-MONO-2-48V-10A-PSU-1-EU","price":279.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*2+48V\/10A PSU*1 \/ AU","offer_id":43721606725725,"sku":"Fosi-Audio-V3-Black-V3-MONO-2-48V-10A-PSU-1-AU","price":279.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ V3 MONO*2+48V\/10A PSU*1 \/ UK","offer_id":43721606758493,"sku":"Fosi-Audio-V3-Black-V3-MONO-2-48V-10A-PSU-1-UK","price":279.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_V3.webp?v=1784631954"},{"product_id":"fosi-audio-bt30d","title":"Fosi Audio BT30D","description":"\u003cp\u003eFosi Audio BT30D is a compact 2.1-channel Bluetooth integrated amplifier for two passive speakers and a passive or powered subwoofer.\u003c\/p\u003e\u003cp\u003eDedicated subwoofer level and crossover controls make it a straightforward way to build an adjustable small-room, desktop or TV audio system.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eTrue 2.1-channel speaker control\u003c\/h3\u003e\u003cp\u003eSeparate stereo and subwoofer amplification supports passive speakers plus a passive subwoofer from one compact unit.\u003c\/p\u003e\u003ch3\u003ePassive and powered subwoofer flexibility\u003c\/h3\u003e\u003cp\u003eSpeaker-level subwoofer output and a line-level subwoofer connection support different bass-system configurations.\u003c\/p\u003e\u003ch3\u003eDedicated bass integration\u003c\/h3\u003e\u003cp\u003eSubwoofer volume and cutoff adjustment help blend low frequencies with the main speakers.\u003c\/p\u003e\n\u003ch3\u003eCompact analog control\u003c\/h3\u003e\u003cp\u003eMaster volume, bass, treble, subwoofer level and crossover adjustment are available directly from the front panel.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCompact 2.1 passive-speaker systems\u003c\/li\u003e\n\u003cli\u003eDesktop and small-room audio\u003c\/li\u003e\n\u003cli\u003eAdding an adjustable subwoofer to bookshelf speakers\u003c\/li\u003e\n\u003cli\u003eBluetooth or RCA playback\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSystems requiring HDMI ARC or digital audio inputs\u003c\/li\u003e\n\u003cli\u003eUsers needing a headphone output\u003c\/li\u003e\n\u003cli\u003eLarge high-output home-theater systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThe main left\/right outputs are for passive speakers.\u003c\/li\u003e\n\u003cli\u003eUse the dedicated speaker output for a passive subwoofer or the line-level output for a powered subwoofer.\u003c\/li\u003e\n\u003cli\u003eIt has no phono stage; a turntable requires line output or an external phono preamplifier.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media (max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important;margin-right:0!important}}.pbg__notes .emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0;\"\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioBT30D_002.webp?v=1758459884\" alt=\"Fosi Audio BT30D front and rear connection diagram\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioBT30D_005.webp?v=1758459884\" alt=\"Fosi Audio BT30D 2.1 audio system setup\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan it power a passive subwoofer?\u003c\/h3\u003e\u003cp\u003eYes, through the dedicated subwoofer speaker output.\u003c\/p\u003e\u003ch3\u003eCan it connect to a powered subwoofer?\u003c\/h3\u003e\u003cp\u003eYes, through its line-level subwoofer output.\u003c\/p\u003e\u003ch3\u003eCan it be used without a subwoofer?\u003c\/h3\u003e\u003cp\u003eYes, it can operate as a 2.0-channel amplifier for passive speakers.\u003c\/p\u003e\u003ch3\u003eCan it connect to a TV?\u003c\/h3\u003e\u003cp\u003eYes when the TV provides compatible analog audio output; it has no HDMI or optical input.\u003c\/p\u003e\u003ch3\u003eCan it power active speakers?\u003c\/h3\u003e\u003cp\u003eThe main speaker outputs are amplified for passive speakers. A compatible line-level output should be used for powered equipment.\u003c\/p\u003e\u003ch3\u003eDoes it include Wi-Fi streaming?\u003c\/h3\u003e\u003cp\u003eNo. Wireless playback is through Bluetooth.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003ePassive 2.1 system\u003c\/h3\u003e\u003cp\u003eSource icon: phone\u003cbr\u003eSource: Phone \/ streamer\u003cbr\u003eConnection: Bluetooth or RCA\u003cbr\u003eOutput connection: L\/R speaker terminals + passive subwoofer terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Two passive speakers + passive subwoofer\u003c\/p\u003e\u003ch3\u003ePowered subwoofer system\u003c\/h3\u003e\u003cp\u003eSource icon: TV\u003cbr\u003eSource: TV analog output \/ DAC\u003cbr\u003eConnection: RCA\u003cbr\u003eOutput connection: L\/R speaker terminals + line-level sub output\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Passive speakers + powered subwoofer\u003c\/p\u003e\n\u003ch3\u003ePassive 2.0 stereo system\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: Streamer \/ DAC \/ phone\u003cbr\u003eConnection: RCA or Bluetooth\u003cbr\u003eOutput connection: Left and right speaker terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Two passive speakers\u003c\/p\u003e\u003cp\u003eNote: A subwoofer is optional; the BT30D can operate as a conventional stereo amplifier.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eInputs\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eBluetooth 5.0\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eRCA line input\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eOutputs\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eStereo passive-speaker output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003ePassive-subwoofer speaker output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eLine-level output for powered subwoofer\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eAmplification\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eAmplifier Chipset\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e2 × TI TPA3116D2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eMaximum Main Output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e50 W × 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eMaximum Subwoofer Output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e100 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSpeaker Impedance\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e2–8 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSubwoofer Cutoff Adjustment\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e20–200 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eConnectivity and physical\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eBluetooth Range\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eup to 15 m \/ 49 ft without obstacles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eDimensions\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e118 × 132 × 35 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSupplied Power Adapter\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e24 V \/ 4.5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eComparison: BT30D or BT30D Pro?\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:520px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eBT30D\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eBT30D Pro\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eAmplifier architecture\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e2 × TPA3116D2\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eTPA3255\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eMaximum output\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e50 W × 2 + 100 W\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e165 W × 2 + 350 W at 4 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eDC input range\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eSupplied 24 V \/ 4.5 A\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e12–36 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eBest use\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eCompact moderate-output 2.1\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eHigher-output 2.1 systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43721622847581,"sku":"Fosi-Audio-BT30D-Black-US","price":98.17,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43721622880349,"sku":"Fosi-Audio-BT30D-Black-EU","price":79.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43721622913117,"sku":"Fosi-Audio-BT30D-Black-AU","price":79.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43721622945885,"sku":"Fosi-Audio-BT30D-Black-UK","price":79.9,"currency_code":"USD","in_stock":true},{"title":"Silver \/ US","offer_id":43721622749277,"sku":"Fosi-Audio-BT30D-Silver-US","price":79.9,"currency_code":"USD","in_stock":true},{"title":"Silver \/ EU","offer_id":43668425375837,"sku":"Fosi-Audio-BT30D-Silver-EU","price":79.9,"currency_code":"USD","in_stock":true},{"title":"Silver \/ AU","offer_id":43721622782045,"sku":"Fosi-Audio-BT30D-Silver-AU","price":79.9,"currency_code":"USD","in_stock":true},{"title":"Silver \/ UK","offer_id":43721622814813,"sku":"Fosi-Audio-BT30D-Silver-UK","price":79.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_BT30D_9a060891-4269-4944-8d1c-384ac75e831d.webp?v=1785219705"},{"product_id":"fosi-tb10d","title":"Fosi Audio TB10D","description":"\n\u003cp\u003eFosi Audio TB10D is a compact analog stereo power amplifier for driving passive speakers from a line-level source.\u003c\/p\u003e\u003cp\u003eIts TI TPA3255 power stage, 300W x2 maximum rating and front bass\/treble controls deliver strong value for simple, adjustable HiFi systems.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003cp\u003eFour reasons this product deserves a place in a well-planned audio system.\u003c\/p\u003e\u003ch3\u003eTPA3255 Amplification\u003c\/h3\u003e\u003cp\u003eTexas Instruments Class D architecture provides high efficiency and substantial power from a compact chassis.\u003c\/p\u003e\u003ch3\u003e300W x2 Maximum Rating\u003c\/h3\u003e\u003cp\u003eThe amplifier offers useful headroom for compatible 2–8Ω passive speakers; real output depends on the supply and speaker load.\u003c\/p\u003e\u003ch3\u003eFront Tone Controls\u003c\/h3\u003e\u003cp\u003eDedicated bass and treble knobs allow quick adjustment without an app or external equalizer.\u003c\/p\u003e\u003ch3\u003eStraightforward Analog System\u003c\/h3\u003e\u003cp\u003eOne RCA input and speaker outputs keep setup simple for users who already own a DAC, streamer or preamp.\u003c\/p\u003e\n\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBudget-focused passive-speaker systems\u003c\/li\u003e\n\u003cli\u003eUsers who want physical bass and treble adjustment\u003c\/li\u003e\n\u003cli\u003eDesktop and small-room stereo systems\u003c\/li\u003e\n\u003cli\u003ePairing with an existing DAC, streamer or preamp\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUsers requiring Bluetooth, USB, optical or HDMI inputs\u003c\/li\u003e\n\u003cli\u003eBalanced XLR systems\u003c\/li\u003e\n\u003cli\u003eHeadphone listening\u003c\/li\u003e\n\u003cli\u003eSystems requiring a dedicated subwoofer or preamplifier output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"emiuzek-product-content-images\" style=\"width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/TBD10002.webp?v=1758461501\" alt=\"Fosi Audio TB10D TPA3255 stereo amplifier power performance\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/TBD10005.webp?v=1758461501\" alt=\"Fosi Audio TB10D controls, RCA input and speaker connections\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/TBD10006.webp?v=1758461501\" alt=\"Fosi Audio TB10D connected in a compact stereo system\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTB10D is an analog speaker amplifier; it requires a separate line-level source.\u003c\/li\u003e\n\u003cli\u003eThe 300W x2 figure is a maximum rating under specific conditions, not continuous output with every power supply and speaker.\u003c\/li\u003e\n\u003cli\u003eIt has no headphone, Bluetooth or dedicated subwoofer output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eCan the TB10D drive passive speakers directly?\u003c\/h3\u003e\u003cp\u003eYes. It supports compatible 2–8Ω passive speakers.\u003c\/p\u003e\u003ch3\u003eDoes it include Bluetooth?\u003c\/h3\u003e\u003cp\u003eNo. Add a Bluetooth receiver or streamer to the RCA input if wireless playback is needed.\u003c\/p\u003e\u003ch3\u003eCan I connect a turntable?\u003c\/h3\u003e\u003cp\u003eOnly through a turntable with built-in phono output or a separate phono preamplifier.\u003c\/p\u003e\u003ch3\u003eDoes it have a subwoofer output?\u003c\/h3\u003e\u003cp\u003eNo dedicated subwoofer or pre-out is provided.\u003c\/p\u003e\u003ch3\u003eCan I use a DAC or network streamer?\u003c\/h3\u003e\u003cp\u003eYes. Connect its analog line output to the TB10D RCA input.\u003c\/p\u003e\u003ch3\u003eWhat does 300W x2 mean?\u003c\/h3\u003e\u003cp\u003eIt is the specified maximum output under particular supply and load conditions; usable continuous power varies with the system.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eDAC stereo system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Computer \/ digital source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB or digital to DAC; RCA from DAC\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Passive speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Set the DAC to line or controlled output as appropriate.\u003c\/p\u003e\u003ch3\u003eNetwork streaming system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Network streamer\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e RCA line output\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Passive speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use the streamer for source selection and playback.\u003c\/p\u003e\u003ch3\u003eTV stereo system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Television\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Optical\/HDMI to external DAC; RCA to TB10D\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Passive speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e TB10D does not accept TV digital audio directly.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAmplifier\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAnalog stereo Class D amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAmplifier Chip\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTI TPA3255\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eMaximum Output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e300W x2 at 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSpeaker Impedance\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e2–8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eAudio\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e20Hz–40kHz (±2dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTHD\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≤0.3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSNR\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≥90dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eInput Sensitivity\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≤600mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eConnectivity and Power\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eInput\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eStereo RCA line input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eOutput\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePassive speaker binding posts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTone Controls\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBass and treble\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDC Input\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e18–48V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eIncluded Power Supply\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e32V\/5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSetup\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDAC system\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDigital source → DAC → RCA → TB10D → passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eStreamer system\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eStreamer → RCA → TB10D → passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTV system\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTV → external DAC → RCA → TB10D → passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eTB10D\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eV3 Stereo\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eBT20A Pro\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eProduct Position\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTone-control stereo amp\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePure stereo amp\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBluetooth stereo amp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAmplifier Chip\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTPA3255\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTPA3255\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTPA3255\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eMaximum Output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e300W x2 at 4Ω\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e300W x2 at 4Ω\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e300W x2 at 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAnalog Input\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRCA\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRCA\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBluetooth\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTone Controls\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBass, treble\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBass, treble\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePre-out\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSpeaker Load\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e2–8Ω\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e2–8Ω\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e2–8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBest Use\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSimple adjustable stereo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eMinimal pure analog path\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eWireless stereo system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43673999802461,"sku":"Fosi-Audio-TB10D-Black-US","price":79.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43673999835229,"sku":"Fosi-Audio-TB10D-Black-EU","price":79.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43673999867997,"sku":"Fosi-Audio-TB10D-Black-AU","price":79.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43673999900765,"sku":"Fosi-Audio-TB10D-Black-UK","price":79.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_TB10D_8266b131-bfcd-46ef-8caf-5d6929daac3a.webp?v=1785381612"},{"product_id":"fosi-audio-bt30d-pro","title":"Fosi Audio BT30D Pro","description":"\u003cp\u003eFosi Audio BT30D Pro is a TPA3255-based 2.1-channel Bluetooth integrated amplifier for passive stereo speakers and passive or powered subwoofers.\u003c\/p\u003e\u003cp\u003eHigh-output Class-D amplification, separate bass controls and flexible subwoofer connections make it a compact control center for a powerful 2.1 system.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eHigh-output 2.1 amplification\u003c\/h3\u003e\u003cp\u003eDedicated stereo and subwoofer channels provide up to 165 W × 2 plus 350 W maximum at 4 Ω.\u003c\/p\u003e\u003ch3\u003eFlexible subwoofer support\u003c\/h3\u003e\u003cp\u003eConnect a passive subwoofer from the amplified output or powered equipment from the 3.5 mm full-range line output.\u003c\/p\u003e\u003ch3\u003eIndependent system tuning\u003c\/h3\u003e\u003cp\u003eMaster volume, bass, treble, subwoofer volume and subwoofer frequency controls support practical room integration.\u003c\/p\u003e\u003ch3\u003eBluetooth and RCA inputs\u003c\/h3\u003e\u003cp\u003eWorks with wireless mobile sources or conventional analog line-level equipment.\u003c\/p\u003e\n\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHigher-output compact 2.1 systems\u003c\/li\u003e\n\u003cli\u003ePassive bookshelf or floor-standing speakers\u003c\/li\u003e\n\u003cli\u003ePassive or powered subwoofer integration\u003c\/li\u003e\n\u003cli\u003eDesktop, living-room and small TV systems with analog audio\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSystems requiring HDMI ARC, optical or USB inputs\u003c\/li\u003e\n\u003cli\u003eUsers needing a headphone output\u003c\/li\u003e\n\u003cli\u003eTurntables without a phono preamplifier\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThe advertised 165 W × 2 + 350 W figures are maximum ratings at 4 Ω and depend on the power supply and load.\u003c\/li\u003e\n\u003cli\u003eThe 3.5 mm output is full-range; powered subwoofers should use their own crossover where required.\u003c\/li\u003e\n\u003cli\u003eBluetooth has priority over RCA, so disconnect Bluetooth to return to the wired input.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media (max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important;margin-right:0!important}}.pbg__notes .emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0;\"\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_BT30D_PRO_002.webp?v=1758464320\" alt=\"Fosi Audio BT30D Pro 2.1 home audio system\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_BT30D_PRO_004.webp?v=1758464320\" alt=\"Fosi Audio BT30D Pro desktop integrated amplifier\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_BT30D_PRO_007.webp?v=1758464320\" alt=\"Fosi Audio BT30D Pro connection system diagram\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1000px;height:auto;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan it power passive speakers and a passive subwoofer?\u003c\/h3\u003e\u003cp\u003eYes. It provides amplified outputs for both.\u003c\/p\u003e\u003ch3\u003eCan it connect to a powered subwoofer?\u003c\/h3\u003e\u003cp\u003eYes, using the 3.5 mm full-range output and the powered subwoofer's compatible input.\u003c\/p\u003e\u003ch3\u003eCan it operate as a 2.0 amplifier?\u003c\/h3\u003e\u003cp\u003eYes. A subwoofer is optional.\u003c\/p\u003e\u003ch3\u003eDoes it support aptX?\u003c\/h3\u003e\u003cp\u003eNo. The official instructions state that aptX, aptX HD and aptX Low Latency are not supported.\u003c\/p\u003e\u003ch3\u003eCan it connect directly to a turntable?\u003c\/h3\u003e\u003cp\u003eOnly if the turntable provides line-level output; otherwise add a phono preamplifier.\u003c\/p\u003e\u003ch3\u003eCan it connect to a TV?\u003c\/h3\u003e\u003cp\u003eYes when the TV has compatible analog output. It does not have HDMI ARC or optical input.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eHigh-output passive 2.1 system\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: Streamer \/ DAC \/ phone\u003cbr\u003eConnection: RCA or Bluetooth\u003cbr\u003eOutput connection: Stereo speaker terminals + passive subwoofer terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Passive speakers + passive subwoofer\u003c\/p\u003e\u003ch3\u003ePowered subwoofer system\u003c\/h3\u003e\u003cp\u003eSource icon: TV\u003cbr\u003eSource: TV analog output \/ DAC\u003cbr\u003eConnection: RCA\u003cbr\u003eOutput connection: Stereo speaker terminals + 3.5 mm full-range output\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Passive speakers + powered subwoofer\u003c\/p\u003e\n\u003ch3\u003ePassive 2.0 stereo system\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: Streamer \/ DAC \/ phone\u003cbr\u003eConnection: RCA or Bluetooth\u003cbr\u003eOutput connection: Stereo speaker terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Two passive speakers\u003c\/p\u003e\u003cp\u003eNote: A subwoofer is optional; leave the subwoofer outputs unused for a 2.0 system.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eInputs\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eBluetooth 5.0\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eRCA line input\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eOutputs\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eStereo passive-speaker output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003ePassive-subwoofer speaker output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003e3.5 mm full-range line output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eAmplification\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eAmplifier Chip\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eTI TPA3255\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eMaximum Output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e165 W × 2 + 350 W at 4 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSpeaker Impedance\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e2–8 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eFrequency Response\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e20 Hz–20 kHz (±1 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eTHD\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e≤0.04%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eSNR\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e≥108 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eInput Sensitivity\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e700 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003ePassive Subwoofer Frequency Adjustment\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eup to 300 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eConnectivity and power\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eBluetooth Range\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003eup to 50 ft without obstacles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003eDC Input Range\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003e12–36 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top;\"\u003ePower Adapter\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top;\"\u003edependent on selected variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eComparison: BT30D or BT30D Pro?\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:520px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eBT30D\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left;\"\u003eBT30D Pro\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eAmplifier architecture\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e2 × TPA3116D2\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eTPA3255\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eMaximum output\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e50 W × 2 + 100 W\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e165 W × 2 + 350 W at 4 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eDC input range\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eSupplied 24 V \/ 4.5 A\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003e12–36 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eBest use\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eCompact moderate-output 2.1\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;\"\u003eHigher-output 2.1 systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"48V 5A \/ Black","offer_id":43672621744221,"sku":"Fosi-Audio-BT30D-Pro-48V-5A-Black","price":133.19,"currency_code":"USD","in_stock":true},{"title":"32V 5A \/ Black","offer_id":43672621776989,"sku":"Fosi-Audio-BT30D-Pro-32V-5A-Black","price":109.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_BT30D_Pro.webp?v=1784691027"},{"product_id":"fosi-audio-mc351","title":"Fosi Audio MC351","description":"\u003cp\u003eFosi Audio MC351 is a compact 2.1-channel integrated digital amplifier for passive stereo speakers and a passive subwoofer.\u003c\/p\u003e\u003cp\u003eDual TI TPA3255 amplifier chips, broad digital and analog inputs and up to 165W × 2 + 350W at 4Ω make it a practical control center for powerful 2.1 systems.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eDedicated 2.1 amplification\u003c\/h3\u003e\u003cp\u003eSeparate stereo and passive-subwoofer amplification builds a complete 2.1 system without a second power amp.\u003c\/p\u003e\u003ch3\u003eDual TPA3255 architecture\u003c\/h3\u003e\u003cp\u003eTwo TI TPA3255 amplifier chips provide high output for speakers and a passive subwoofer.\u003c\/p\u003e\u003ch3\u003eBroad source compatibility\u003c\/h3\u003e\u003cp\u003eBluetooth 5.3, USB, optical, coaxial and RCA inputs cover common music, computer and TV sources.\u003c\/p\u003e\u003ch3\u003eSystem expansion through pre-out\u003c\/h3\u003e\u003cp\u003eThe pre-out connection supports a powered subwoofer or compatible downstream equipment.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePassive bookshelf or floorstanding speaker systems\u003c\/li\u003e\n\u003cli\u003e2.1 systems using a passive subwoofer\u003c\/li\u003e\n\u003cli\u003eTV and desktop systems using optical, coaxial or USB audio\u003c\/li\u003e\n\u003cli\u003eUsers who need both wireless and wired source inputs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUsers needing HDMI ARC or TV-remote CEC control\u003c\/li\u003e\n\u003cli\u003eHeadphone-only systems\u003c\/li\u003e\n\u003cli\u003eTurntables without a built-in or external phono preamp\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_MC351_005.webp?v=1758467891\" alt=\"Fosi Audio MC351 dual TPA3255 amplifier power and audio performance\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_MC351_006.webp?v=1758467891\" alt=\"Fosi Audio MC351 Bluetooth, USB, optical, coaxial and RCA inputs\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_MC351_007.webp?v=1758467891\" alt=\"Fosi Audio MC351 passive speaker and 2.1 subwoofer connection scenarios\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMC351 directly powers passive speakers and a passive subwoofer; these are different from line-level active speakers.\u003c\/li\u003e\n\u003cli\u003eUSB is an audio-data input, not a power input.\u003c\/li\u003e\n\u003cli\u003eRCA is line level and does not replace a phono preamp for a standard turntable.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan MC351 drive passive speakers?\u003c\/h3\u003e\u003cp\u003eYes. It is designed for 4–8Ω passive speakers.\u003c\/p\u003e\u003ch3\u003eCan it power a passive subwoofer?\u003c\/h3\u003e\u003cp\u003eYes. It has a dedicated amplified passive-subwoofer output.\u003c\/p\u003e\u003ch3\u003eCan I connect a powered subwoofer?\u003c\/h3\u003e\u003cp\u003eYes. Use the line-level pre-out with a compatible powered subwoofer.\u003c\/p\u003e\u003ch3\u003eDoes it support HDMI ARC?\u003c\/h3\u003e\u003cp\u003eNo. Use optical, coaxial or RCA audio from a television.\u003c\/p\u003e\u003ch3\u003eWhat does the USB port do?\u003c\/h3\u003e\u003cp\u003eIt receives USB digital audio from a compatible computer or source; it does not power the amplifier.\u003c\/p\u003e\u003ch3\u003eCan I connect a turntable?\u003c\/h3\u003e\u003cp\u003eOnly if the turntable has a built-in phono preamp or you add an external phono preamp.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003e2.1 passive speaker system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Computer, streamer or TV\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB, optical, coaxial, RCA or Bluetooth\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals + passive-subwoofer output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Passive speakers + passive subwoofer\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Match speaker impedance and begin with low volume.\u003c\/p\u003e\u003ch3\u003eStereo speaker system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Any supported digital or analog source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Chosen input\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Left\/right speaker terminals\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e 4–8Ω passive speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Leave the passive-subwoofer output unused for a 2.0 system.\u003c\/p\u003e\u003ch3\u003eSystem with powered subwoofer\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Any supported source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Chosen input\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals + pre-out\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Passive speakers + powered subwoofer\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Set crossover and level on the powered subwoofer.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eCore specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003e2.1-channel integrated digital amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier chips\u003c\/td\u003e\n\u003ctd\u003eTI TPA3255 × 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum output\u003c\/td\u003e\n\u003ctd\u003e165W × 2 + 350W at 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeaker impedance\u003c\/td\u003e\n\u003ctd\u003e4–8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e≤0.03%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSNR \/ Dynamic range\u003c\/td\u003e\n\u003ctd\u003e≥100dB \/ ≥100dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower input range\u003c\/td\u003e\n\u003ctd\u003eDC 24–48V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eInputs and outputs\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eBluetooth 5.3, USB, optical, coaxial, RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003ePassive speakers, passive subwoofer, pre-out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB sampling\u003c\/td\u003e\n\u003ctd\u003eUp to 24-bit \/ 96kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical \/ coaxial sampling\u003c\/td\u003e\n\u003ctd\u003eUp to 32-bit \/ 192kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20Hz–20kHz (±0.5dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubwoofer output range\u003c\/td\u003e\n\u003ctd\u003e20Hz–250Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSetup\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.1 passive system\u003c\/td\u003e\n\u003ctd\u003eSource → MC351 → Passive speakers + passive subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTV system\u003c\/td\u003e\n\u003ctd\u003eTV optical output → MC351 → Passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowered sub expansion\u003c\/td\u003e\n\u003ctd\u003eSource → MC351 → Passive speakers + pre-out → Powered subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eFosi Audio product comparison\u003c\/h3\u003e\u003cp\u003eCompare the two compact Fosi Audio integrated amplifiers by their power, output structure and intended system layout.\u003c\/p\u003e\u003cdiv style=\"max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"min-width:760px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"min-width:150px;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eMC351\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eMC331\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct position\u003c\/th\u003e\n\u003ctd\u003eHigh-power 2.1 digital integrated amplifier\u003c\/td\u003e\n\u003ctd\u003eTube DAC \/ integrated stereo amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBuilt-in speaker amplifier\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum output\u003c\/th\u003e\n\u003ctd\u003e165W × 2 + 350W at 4Ω\u003c\/td\u003e\n\u003ctd\u003e105W × 2 at 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMain inputs\u003c\/th\u003e\n\u003ctd\u003eBluetooth 5.3, USB, optical, coaxial, RCA\u003c\/td\u003e\n\u003ctd\u003eBluetooth, USB, optical, coaxial, RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpeaker output\u003c\/th\u003e\n\u003ctd\u003eStereo passive speakers\u003c\/td\u003e\n\u003ctd\u003eStereo passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePassive subwoofer output\u003c\/th\u003e\n\u003ctd\u003eYes, dedicated amplified output\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLine-level pre-out\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeadphone output\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes, 3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTube stage\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes, replaceable tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBest use\u003c\/th\u003e\n\u003ctd\u003ePowerful passive-speaker 2.1 system\u003c\/td\u003e\n\u003ctd\u003eCompact tube stereo and headphone system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ No Power Supply \/ US","offer_id":43722573774941,"sku":"Fosi-Audio-MC351-Black-No-Power-Supply-US","price":169.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ No Power Supply \/ EU","offer_id":43722573807709,"sku":"Fosi-Audio-MC351-Black-No-Power-Supply-EU","price":169.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ No Power Supply \/ AU","offer_id":43722573840477,"sku":"Fosi-Audio-MC351-Black-No-Power-Supply-AU","price":169.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ No Power Supply \/ UK","offer_id":43722573873245,"sku":"Fosi-Audio-MC351-Black-No-Power-Supply-UK","price":169.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ 32V Power Supply \/ US","offer_id":43722573906013,"sku":"Fosi-Audio-MC351-Black-32V-Power-Supply-US","price":169.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ 32V Power Supply \/ EU","offer_id":43722573938781,"sku":"Fosi-Audio-MC351-Black-32V-Power-Supply-EU","price":169.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ 32V Power Supply \/ AU","offer_id":43722573971549,"sku":"Fosi-Audio-MC351-Black-32V-Power-Supply-AU","price":169.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ 32V Power Supply \/ UK","offer_id":43722574004317,"sku":"Fosi-Audio-MC351-Black-32V-Power-Supply-UK","price":169.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ 48V Power Supply \/ US","offer_id":43722574037085,"sku":"Fosi-Audio-MC351-Black-48V-Power-Supply-US","price":169.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ 48V Power Supply \/ EU","offer_id":43722574069853,"sku":"Fosi-Audio-MC351-Black-48V-Power-Supply-EU","price":169.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ 48V Power Supply \/ AU","offer_id":43722574102621,"sku":"Fosi-Audio-MC351-Black-48V-Power-Supply-AU","price":169.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ 48V Power Supply \/ UK","offer_id":43722574135389,"sku":"Fosi-Audio-MC351-Black-48V-Power-Supply-UK","price":169.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_MC351_002.webp?v=1758467891"},{"product_id":"fosi-audio-sk01","title":"Fosi Audio SK01","description":"\u003cp\u003eFosi Audio SK01 is a battery-powered analog headphone amplifier and preamplifier with 3.5mm line input, dual headphone jacks and adjustable three-band tone control.\u003c\/p\u003e\u003cp\u003eUp to 2400mW at 32Ω in high gain, pure bypass, loudness and a 2500mAh battery make it flexible for desktop and transportable wired listening.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eHigh-power analog headphone drive\u003c\/h3\u003e\u003cp\u003eHigh gain delivers up to 2400mW at 32Ω for a broad 16–300Ω headphone range.\u003c\/p\u003e\u003ch3\u003eThree-band tone shaping\u003c\/h3\u003e\u003cp\u003eSeparate treble, midrange and bass controls allow more precise adjustment than basic two-band designs.\u003c\/p\u003e\u003ch3\u003ePure and loudness modes\u003c\/h3\u003e\u003cp\u003eBypass removes tone processing, while loudness improves perceived bass and treble at low listening levels.\u003c\/p\u003e\u003ch3\u003eHeadphone amp and preamp\u003c\/h3\u003e\u003cp\u003e3.5mm line out feeds an amplifier or powered speakers with the same volume and tone control.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePowerful wired headphone listening\u003c\/li\u003e\n\u003cli\u003eAnalog sources needing portable amplification\u003c\/li\u003e\n\u003cli\u003eUsers wanting three-band tone control\u003c\/li\u003e\n\u003cli\u003ePreamp use with powered speakers or a power amplifier\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUSB digital audio or DAC conversion\u003c\/li\u003e\n\u003cli\u003eBluetooth wireless playback\u003c\/li\u003e\n\u003cli\u003eBalanced headphone connections\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"grid-column:1 \/ -1;width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioSK0102_9372ec89-77fe-4bdc-995b-f254ef8d72fc.webp?v=1758520126\" alt=\"Fosi Audio SK01 high-power headphone amplifier and three-band tone control\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioSK01-03_dd374eb7-e8a5-4fc6-9320-b2354753a484.webp?v=1758524322\" alt=\"Fosi Audio SK01 line input, pre-out, 3.5mm and 6.35mm headphone connections\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioSK01-04_28da0aac-7481-4e2e-8c91-eb44ed44ca7c.webp?v=1758524322\" alt=\"Fosi Audio SK01 portable headphone amplifier and desktop preamplifier scenarios\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSK01 is analog only; USB-C is for charging and does not carry audio data.\u003c\/li\u003e\n\u003cli\u003eIt cannot drive passive speakers directly; line out must feed an amplifier.\u003c\/li\u003e\n\u003cli\u003eHigh gain can become very loud—start at minimum volume before wearing headphones.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eDoes USB-C carry audio?\u003c\/h3\u003e\u003cp\u003eNo. USB-C is for 5V charging only.\u003c\/p\u003e\u003ch3\u003eCan it work as a preamp?\u003c\/h3\u003e\u003cp\u003eYes. Use 3.5mm line out into an amplifier or powered speakers.\u003c\/p\u003e\u003ch3\u003eCan it drive passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. A separate power amplifier is required.\u003c\/p\u003e\u003ch3\u003eWhat headphones are supported?\u003c\/h3\u003e\u003cp\u003eFosi specifies 16–300Ω.\u003c\/p\u003e\u003ch3\u003eCan tone controls be bypassed?\u003c\/h3\u003e\u003cp\u003eYes. PURE mode bypasses the tone circuit.\u003c\/p\u003e\u003ch3\u003eHow long does the battery last?\u003c\/h3\u003e\u003cp\u003eFosi states up to about six hours, depending on use and load.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003ePortable headphones\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Phone, DAP or dongle DAC\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e 3.5mm line in\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e 3.5mm or 6.35mm headphone\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e USB-C is not an audio input.\u003c\/p\u003e\u003ch3\u003eDesktop preamp\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e DAC or streamer\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e 3.5mm line in\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e 3.5mm line out\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Power amplifier or powered speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e SK01 controls level and tone.\u003c\/p\u003e\u003ch3\u003eHigh-impedance headphones\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Line-level DAC\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e 3.5mm line in\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e 6.35mm headphone\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e 16–300Ω headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Choose gain carefully and start low.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAudio performance\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh \/ low gain output\u003c\/td\u003e\n\u003ctd\u003e2400mW \/ 300mW at 32Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadphone impedance\u003c\/td\u003e\n\u003ctd\u003e16–300Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSNR\u003c\/td\u003e\n\u003ctd\u003e108dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e≤0.001% at 1kHz \/ 770mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20Hz–20kHz (±0.05dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise floor \/ Crosstalk\u003c\/td\u003e\n\u003ctd\u003e20μV \/ 83dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eConnections and power\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003ctd\u003e3.5mm line in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003e3.5mm line out; 3.5mm and 6.35mm headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTone adjustment\u003c\/td\u003e\n\u003ctd\u003eTreble ±8dB; mid ±10dB; bass ±11dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery\u003c\/td\u003e\n\u003ctd\u003e2500mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging\u003c\/td\u003e\n\u003ctd\u003eDC 5V USB-C; power only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSetup\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePortable\u003c\/td\u003e\n\u003ctd\u003ePhone\/DAP → SK01 → Headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesktop\u003c\/td\u003e\n\u003ctd\u003eDAC → SK01 → Headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePreamp\u003c\/td\u003e\n\u003ctd\u003eSource → SK01 line out → Power amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eFosi Audio product comparison\u003c\/h3\u003e\u003cp\u003eCompare the models by the differences that most affect system matching and everyday use.\u003c\/p\u003e\u003cdiv style=\"max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"min-width:860px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"min-width:150px;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eSK01\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eSK02\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eP3\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct position\u003c\/th\u003e\n\u003ctd\u003eAnalog headphone amp \/ preamp\u003c\/td\u003e\n\u003ctd\u003eUSB\/optical DAC headphone amp\u003c\/td\u003e\n\u003ctd\u003eTube preamp \/ headphone amp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDigital DAC\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes, ES9038Q2M\u003c\/td\u003e\n\u003ctd\u003eBluetooth input only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMain inputs\u003c\/th\u003e\n\u003ctd\u003e3.5mm line\u003c\/td\u003e\n\u003ctd\u003eUSB, optical\u003c\/td\u003e\n\u003ctd\u003eBluetooth, RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeadphone outputs\u003c\/th\u003e\n\u003ctd\u003e3.5mm, 6.35mm\u003c\/td\u003e\n\u003ctd\u003e3.5mm, 4.4mm\u003c\/td\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum output at 32Ω\u003c\/th\u003e\n\u003ctd\u003e2400mW high gain\u003c\/td\u003e\n\u003ctd\u003e755mW via 4.4mm\u003c\/td\u003e\n\u003ctd\u003e150mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBalanced headphone output\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e4.4mm\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTone controls\u003c\/th\u003e\n\u003ctd\u003eTreble, mid, bass\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eBass, treble\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBattery operation\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLine \/ pre-out\u003c\/th\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003ctd\u003e3.5mm line \/ optical\u003c\/td\u003e\n\u003ctd\u003eRCA, AUX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBest use\u003c\/th\u003e\n\u003ctd\u003ePowerful analog portable amp\u003c\/td\u003e\n\u003ctd\u003eHi-res desktop DAC\/amp\u003c\/td\u003e\n\u003ctd\u003eTube Bluetooth preamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43678059266141,"sku":"Fosi-Audio-SK01-Black-US","price":25.42,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43678059298909,"sku":"Fosi-Audio-SK01-Black-EU","price":79.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43678059331677,"sku":"Fosi-Audio-SK01-Black-UK","price":79.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43678059364445,"sku":"Fosi-Audio-SK01-Black-AU","price":79.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_SK01_7a680de3-2f06-4c5e-909b-3a10273a7874.webp?v=1785380488"},{"product_id":"fosi-audio-q4","title":"Fosi Audio Q4","description":"\u003cp\u003eFosi Audio Q4 is a compact desktop DAC and headphone amplifier that converts USB, optical or coaxial digital audio to headphones and RCA analog output.\u003c\/p\u003e\u003cp\u003eVolume plus bass and treble controls, 24-bit\/192kHz S\/PDIF decoding and support for 16–200Ω headphones make it a practical entry-level computer or TV audio upgrade.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eThree digital inputs\u003c\/h3\u003e\u003cp\u003eUSB, optical and coaxial connections support computers, TVs, consoles and digital transports.\u003c\/p\u003e\u003ch3\u003eHeadphone and RCA outputs\u003c\/h3\u003e\u003cp\u003eListen through 3.5mm headphones or feed an amplifier and powered speakers through RCA.\u003c\/p\u003e\u003ch3\u003eDirect tone adjustment\u003c\/h3\u003e\u003cp\u003eFront bass and treble controls allow quick system tuning.\u003c\/p\u003e\u003ch3\u003eCompact plug-and-play control\u003c\/h3\u003e\u003cp\u003eInput selection and analog volume are integrated into a small desktop chassis.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEntry-level computer audio\u003c\/li\u003e\n\u003cli\u003eTV optical PCM to headphones or stereo system\u003c\/li\u003e\n\u003cli\u003eDesktop headphones and powered speakers\u003c\/li\u003e\n\u003cli\u003eUsers wanting physical bass and treble controls\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDolby or DTS bitstream decoding\u003c\/li\u003e\n\u003cli\u003eBalanced headphone systems\u003c\/li\u003e\n\u003cli\u003eHeadphones above the specified 200Ω range\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"grid-column:1 \/ -1;width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioQ4-002.webp?v=1758521328\" alt=\"Fosi Audio Q4 desktop DAC and headphone amplifier core audio benefits\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioQ4-005.webp?v=1758521328\" alt=\"Fosi Audio Q4 USB, optical, coaxial, RCA and headphone connections\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioQ4-003.webp?v=1758521328\" alt=\"Fosi Audio Q4 computer, TV, headphone and stereo system scenarios\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSet TVs and consoles to two-channel PCM; Q4 does not decode Dolby or DTS.\u003c\/li\u003e\n\u003cli\u003eInserting headphones can mute the RCA output.\u003c\/li\u003e\n\u003cli\u003eUSB audio reaches 24-bit\/96kHz; optical and coaxial reach 24-bit\/192kHz.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan Q4 connect to a TV?\u003c\/h3\u003e\u003cp\u003eYes, through optical or coaxial when the TV is set to PCM stereo.\u003c\/p\u003e\u003ch3\u003eDoes it decode Dolby or DTS?\u003c\/h3\u003e\u003cp\u003eNo. Use PCM output to avoid noise or silence.\u003c\/p\u003e\u003ch3\u003eCan it drive passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. RCA must feed an amplifier, or use powered speakers.\u003c\/p\u003e\u003ch3\u003eCan I use headphones and RCA together?\u003c\/h3\u003e\u003cp\u003eThe headphone connection can mute RCA output, so treat them as alternate outputs.\u003c\/p\u003e\u003ch3\u003eDoes USB need a driver?\u003c\/h3\u003e\u003cp\u003eIt is generally plug-and-play on listed systems; select Fosi Audio Q4 as the playback device.\u003c\/p\u003e\u003ch3\u003eCan I connect an analog source?\u003c\/h3\u003e\u003cp\u003eNo. All Q4 inputs are digital.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eComputer headphones\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e PC or Mac\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB audio\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e 3.5mm headphone\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e 16–200Ω headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Select Q4 as the playback device.\u003c\/p\u003e\u003ch3\u003eTV headphones\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Television\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Optical PCM\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e 3.5mm headphone\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Disable Dolby and DTS output.\u003c\/p\u003e\u003ch3\u003eStereo system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Computer, TV or transport\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB, optical or coaxial\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e RCA\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Amplifier or powered speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use Q4 volume and tone controls.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAudio performance\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB sampling\u003c\/td\u003e\n\u003ctd\u003eUp to 24-bit \/ 96kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical \/ coaxial\u003c\/td\u003e\n\u003ctd\u003eUp to 24-bit \/ 192kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadphone output\u003c\/td\u003e\n\u003ctd\u003e100mW at 32Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadphone impedance\u003c\/td\u003e\n\u003ctd\u003e16–200Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD \/ SNR\u003c\/td\u003e\n\u003ctd\u003e≤0.01% \/ ≥105dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRCA output level\u003c\/td\u003e\n\u003ctd\u003e2.3V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eConnections and physical\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eUSB, optical, coaxial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003e3.5mm headphone, RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChipset\u003c\/td\u003e\n\u003ctd\u003eSA9023 + CS8412 + 97220 + NE5532\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e73.5 × 98 × 33mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e251g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSetup\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eComputer headphones\u003c\/td\u003e\n\u003ctd\u003eComputer → USB → Q4 → Headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTV system\u003c\/td\u003e\n\u003ctd\u003eTV optical PCM → Q4 → Amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowered speakers\u003c\/td\u003e\n\u003ctd\u003eDigital source → Q4 RCA → Powered speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eFosi Audio product comparison\u003c\/h3\u003e\u003cp\u003eCompare the models by the differences that most affect system matching and everyday use.\u003c\/p\u003e\u003cdiv style=\"max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"min-width:860px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"min-width:150px;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eQ4\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eK5 Pro\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eSK02\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct position\u003c\/th\u003e\n\u003ctd\u003eEntry desktop DAC\/amp\u003c\/td\u003e\n\u003ctd\u003eGaming DAC\/amp\u003c\/td\u003e\n\u003ctd\u003eHigher-performance desktop DAC\/amp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUSB maximum\u003c\/th\u003e\n\u003ctd\u003e24-bit \/ 96kHz\u003c\/td\u003e\n\u003ctd\u003e24-bit \/ 96kHz\u003c\/td\u003e\n\u003ctd\u003e32-bit \/ 384kHz, DSD256\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOther digital inputs\u003c\/th\u003e\n\u003ctd\u003eOptical, coaxial\u003c\/td\u003e\n\u003ctd\u003eOptical, coaxial\u003c\/td\u003e\n\u003ctd\u003eOptical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeadphone outputs\u003c\/th\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003ctd\u003e3.5mm, 4.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum headphone power\u003c\/th\u003e\n\u003ctd\u003e100mW at 32Ω\u003c\/td\u003e\n\u003ctd\u003e500mW at 32Ω\u003c\/td\u003e\n\u003ctd\u003e755mW at 32Ω via 4.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMicrophone input\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRCA output\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTone controls\u003c\/th\u003e\n\u003ctd\u003eBass, treble\u003c\/td\u003e\n\u003ctd\u003eBass, treble\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBalanced output\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e4.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBest use\u003c\/th\u003e\n\u003ctd\u003eSimple PC\/TV audio\u003c\/td\u003e\n\u003ctd\u003eGaming with microphone\u003c\/td\u003e\n\u003ctd\u003eHi-res desktop headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43722576920669,"sku":"Fosi-Audio-Q4-Black-US","price":45.91,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43722576953437,"sku":"Fosi-Audio-Q4-Black-EU","price":69.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43722576986205,"sku":"Fosi-Audio-Q4-Black-AU","price":69.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43722577018973,"sku":"Fosi-Audio-Q4-Black-UK","price":69.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_Q4_d1913db8-b72e-4d8d-be4d-df387c7fb9c9.webp?v=1785380488"},{"product_id":"fosi-audio-mc101","title":"Fosi Audio MC101","description":"\u003cp\u003eFosi Audio MC101 is a compact Bluetooth stereo integrated amplifier for passive speakers, styled with an illuminated analog VU meter.\u003c\/p\u003e\u003cp\u003eBluetooth 5.3, RCA input, pre-out, tone controls and up to 100W per channel maximum output combine modern connectivity with tactile vintage-inspired control.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eIlluminated analog VU meter\u003c\/h3\u003e\u003cp\u003eThe moving pointer provides a distinctive visual indication that follows the audio signal.\u003c\/p\u003e\u003ch3\u003eBluetooth and RCA inputs\u003c\/h3\u003e\u003cp\u003eSwitch between Bluetooth 5.3 wireless playback and a conventional analog source.\u003c\/p\u003e\u003ch3\u003ePassive-speaker amplification\u003c\/h3\u003e\u003cp\u003eDual TPA3116 amplifiers provide up to 100W × 2 maximum at 4Ω.\u003c\/p\u003e\u003ch3\u003ePre-out system expansion\u003c\/h3\u003e\u003cp\u003eConnect compatible powered equipment or an additional amplifier from the line-level pre-output.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDesktop and bookshelf passive speakers\u003c\/li\u003e\n\u003cli\u003eSimple Bluetooth stereo systems\u003c\/li\u003e\n\u003cli\u003eUsers who value physical tone controls\u003c\/li\u003e\n\u003cli\u003eSystems needing a pre-output for expansion\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHDMI ARC, optical or USB sources\u003c\/li\u003e\n\u003cli\u003eHeadphone listening\u003c\/li\u003e\n\u003cli\u003eTurntables without a phono preamplifier\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMC101 powers passive speakers; the pre-out is line level and should not be connected to passive speakers.\u003c\/li\u003e\n\u003cli\u003eThe 100W × 2 figure is a maximum specification at 4Ω and depends on power supply and load.\u003c\/li\u003e\n\u003cli\u003eA turntable needs a built-in or separate phono preamplifier before the RCA input.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media(max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important}}.emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0\"\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioMC101_001.webp?v=1758527245\" alt=\"Fosi Audio MC101 white background image\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioMC101_004.webp?v=1758527245\" alt=\"Dedicated to Vintage Lovers\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioMC101_006.webp?v=1758527245\" alt=\"Front and Rear Panel Overview\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan MC101 power passive speakers?\u003c\/h3\u003e\u003cp\u003eYes, through its rear speaker binding posts.\u003c\/p\u003e\u003ch3\u003eDoes it have a subwoofer output?\u003c\/h3\u003e\u003cp\u003eIt has a full-range pre-out; a powered subwoofer must provide a compatible input and crossover.\u003c\/p\u003e\u003ch3\u003eDoes it include a phono stage?\u003c\/h3\u003e\u003cp\u003eNo.\u003c\/p\u003e\u003ch3\u003eCan it connect to a TV?\u003c\/h3\u003e\u003cp\u003eOnly when the TV provides compatible analog output; there is no optical or HDMI input.\u003c\/p\u003e\u003ch3\u003eWhat Bluetooth codecs are supported?\u003c\/h3\u003e\u003cp\u003eSBC and AAC.\u003c\/p\u003e\u003ch3\u003eCan it drive headphones?\u003c\/h3\u003e\u003cp\u003eNo headphone output is provided.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eBluetooth stereo\u003c\/h3\u003e\u003cp\u003eSource icon: phone\u003cbr\u003eSource: Phone \/ tablet\u003cbr\u003eConnection: Bluetooth 5.3\u003cbr\u003eOutput connection: Speaker terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Passive speakers\u003c\/p\u003e\u003ch3\u003eWired stereo\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: Streamer \/ DAC \/ TV analog output\u003cbr\u003eConnection: RCA line input\u003cbr\u003eOutput connection: Speaker terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Passive speakers\u003c\/p\u003e\u003ch3\u003eExpanded system\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: Bluetooth or RCA source\u003cbr\u003eConnection: Bluetooth or RCA\u003cbr\u003eOutput connection: Pre-out\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Powered subwoofer, powered speakers or downstream amplifier\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eConnections\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eInputs\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003eBluetooth 5.3; RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eOutputs\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003eSpeaker binding posts; pre-out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eBluetooth codecs\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003eSBC; AAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eBluetooth range\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e≥10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eAmplification\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eChannels\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eAmplifier chipset\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e2 × TI TPA3116\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eMaximum output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e100W × 2 @ 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSNR\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e≥100dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eTHD\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e≤0.03%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eFrequency response\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e20Hz–20kHz (±1.8dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eDC input\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e12–24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSupplied adapter\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e24V \/ 4.5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eComparison: Which Fosi Audio model is right for you?\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:680px\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMC101\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBT20A\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBT20A Pro\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eAmplifier\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDual TPA3116\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDual TPA3116D2\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eTPA3255\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMaximum stated output\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e100W × 2 @ 4Ω\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e100W × 2\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e300W × 2 @ 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePre-out\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e3.5mm variable pre-out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eSignature feature\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eIlluminated VU meter\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eSimple compact stereo\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHigher output and op-amp rolling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBest use\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eVintage-style Bluetooth stereo\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eEntry compact system\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eExpandable higher-output system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43722579312733,"sku":"Fosi-Audio-MC101-Black-US","price":58.86,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43722579345501,"sku":"Fosi-Audio-MC101-Black-EU","price":99.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43722579378269,"sku":"Fosi-Audio-MC101-Black-AU","price":99.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43722579411037,"sku":"Fosi-Audio-MC101-Black-UK","price":99.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_MC101_d7b0def0-0a5a-4002-859d-7fb670a5317d.webp?v=1785377215"},{"product_id":"fosi-audio-ds1","title":"Fosi Audio DS1","description":"\u003cp\u003eFosi Audio DS1 is a portable USB DAC and headphone amplifier for phones, tablets and computers.\u003c\/p\u003e\u003cp\u003eAn ESS ES9038Q2M DAC, 3.5mm single-ended and 4.4mm balanced outputs, and high-resolution decoding provide a compact upgrade for wired headphones.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eESS ES9038Q2M conversion\u003c\/h3\u003e\u003cp\u003eA proven ESS DAC architecture supports detailed portable playback.\u003c\/p\u003e\u003ch3\u003eDual headphone outputs\u003c\/h3\u003e\u003cp\u003eConnect conventional 3.5mm headphones or compatible 4.4mm balanced headphones.\u003c\/p\u003e\u003ch3\u003eHigh-resolution USB audio\u003c\/h3\u003e\u003cp\u003eSupports PCM up to 32-bit\/768kHz and native DSD512.\u003c\/p\u003e\u003ch3\u003ePortable source-powered design\u003c\/h3\u003e\u003cp\u003eRuns from the connected USB device without a separate battery or charger.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWired headphone listening from USB-C phones\u003c\/li\u003e\n\u003cli\u003eLaptop and desktop USB audio\u003c\/li\u003e\n\u003cli\u003ePortable Hi-Res music systems\u003c\/li\u003e\n\u003cli\u003eHeadphones requiring 3.5mm or 4.4mm output\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWireless Bluetooth listening\u003c\/li\u003e\n\u003cli\u003eHeadsets requiring microphone or inline-control support\u003c\/li\u003e\n\u003cli\u003eDriving passive speakers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDS1 has no battery and draws power from the connected source device.\u003c\/li\u003e\n\u003cli\u003eUse a compatible OTG adapter or cable for devices without USB-C; Lightning accessories may be required separately.\u003c\/li\u003e\n\u003cli\u003eDo not use a 3.5mm-to-4.4mm adapter with the balanced output.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media(max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important}}.emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0\"\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_DS1-002.webp?v=1758531378\" alt=\"USB C DAC DSD512\u0026amp; Headphone Amp\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_DS1-004.webp?v=1758531379\" alt=\"ESS Technology ES9038Q2M\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_DS1-006.webp?v=1758531379\" alt=\"Suitable for Most Devices\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eDoes DS1 support both 3.5mm and 4.4mm headphones?\u003c\/h3\u003e\u003cp\u003eYes, it provides separate 3.5mm single-ended and 4.4mm balanced outputs.\u003c\/p\u003e\u003ch3\u003eDoes it include Bluetooth?\u003c\/h3\u003e\u003cp\u003eNo. DS1 is a wired USB DAC\/headphone amplifier.\u003c\/p\u003e\u003ch3\u003eDoes it need charging?\u003c\/h3\u003e\u003cp\u003eNo. It is powered by the connected USB source.\u003c\/p\u003e\u003ch3\u003eCan it work with Windows and Mac?\u003c\/h3\u003e\u003cp\u003eYes. It supports Windows and macOS, subject to the source device and playback software.\u003c\/p\u003e\u003ch3\u003eCan it answer calls through a headset microphone?\u003c\/h3\u003e\u003cp\u003eNo. It is intended for audio playback and does not provide headset microphone control.\u003c\/p\u003e\u003ch3\u003eIs warmth during use normal?\u003c\/h3\u003e\u003cp\u003eSome warmth is normal for a compact high-output USB DAC.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eUSB-C phone listening\u003c\/h3\u003e\u003cp\u003eSource icon: phone\u003cbr\u003eSource: USB-C phone \/ tablet\u003cbr\u003eConnection: USB-C audio\u003cbr\u003eOutput connection: 3.5mm headphone output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Wired headphones\u003c\/p\u003e\u003ch3\u003eBalanced portable listening\u003c\/h3\u003e\u003cp\u003eSource icon: phone\u003cbr\u003eSource: USB-C phone \/ player\u003cbr\u003eConnection: USB-C audio\u003cbr\u003eOutput connection: 4.4mm balanced output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Compatible balanced headphones\u003c\/p\u003e\u003ch3\u003eComputer audio\u003c\/h3\u003e\u003cp\u003eSource icon: computer\u003cbr\u003eSource: Windows PC \/ Mac\u003cbr\u003eConnection: USB audio\u003cbr\u003eOutput connection: 3.5mm or 4.4mm output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Wired headphones\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAudio architecture\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eProduct type\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003ePortable USB DAC and headphone amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eDAC chipset\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003eESS ES9038Q2M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eMaximum PCM\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e32-bit \/ 768kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eDSD\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003eDSD64 \/ 128 \/ 256 \/ 512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eOutputs and performance\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eHeadphone outputs\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e3.5mm single-ended; 4.4mm balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eOutput power\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e120mW @ 32Ω single-ended; 220mW @ 32Ω balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eRecommended impedance\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e16–300Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eSNR\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e120dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e38g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eComparison: Which Fosi Audio model is right for you?\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:680px\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDS1\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDS2 2024\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDS3\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePrimary use\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePortable Hi-Res music\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePortable Hi-Res music\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMusic and gaming spatial audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDAC \/ processing\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eESS ES9038Q2M\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDual CS43131\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHardware 7.1 processing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMaximum PCM\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e32-bit \/ 768kHz\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e32-bit \/ 384kHz\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e32-bit \/ 768kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMaximum DSD\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDSD512\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDSD256\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDSD512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMaximum stated output\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e220mW @ 32Ω balanced\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e510mW @ 32Ω balanced (manual)\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e220mW @ 32Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBest use\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eCompact ESS dongle\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHigher-power balanced portable setup\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eGaming effects and spatial audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":43713471479901,"sku":"Fosi-Audio-DS1-Black","price":78.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_DS1_59aa58ed-361e-40a3-beb3-ec26b4bc3b4e.webp?v=1785222650"},{"product_id":"fosi-p3","title":"Fosi Audio P3","description":"\u003cp\u003eFosi Audio P3 is a compact tube preamplifier and headphone amplifier with RCA and Bluetooth 5.1 source inputs.\u003c\/p\u003e\u003cp\u003eReplaceable 5654W tubes, aptX-family Bluetooth codecs, bass and treble controls and outputs for headphones, amplifiers and powered speakers make it a versatile analog control stage.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eTube preamplifier character\u003c\/h3\u003e\u003cp\u003eA true tube stage adds adjustable tube character between line-level sources and the rest of the audio system.\u003c\/p\u003e\u003ch3\u003eWireless and wired inputs\u003c\/h3\u003e\u003cp\u003eBluetooth 5.1 with Qualcomm QCC3031 and RCA input support convenient source switching.\u003c\/p\u003e\u003ch3\u003eHeadphone and system outputs\u003c\/h3\u003e\u003cp\u003eA 3.5mm headphone jack, RCA output and AUX output support personal listening and downstream components.\u003c\/p\u003e\u003ch3\u003eHands-on tone control\u003c\/h3\u003e\u003cp\u003eFront bass and treble controls help adapt sound to headphones, speakers and room conditions.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAdding Bluetooth and tube character to a power amplifier\u003c\/li\u003e\n\u003cli\u003eDesktop wired headphone listening\u003c\/li\u003e\n\u003cli\u003eActive speaker systems needing volume and tone control\u003c\/li\u003e\n\u003cli\u003eUsers interested in replaceable tube tuning\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDriving passive speakers directly\u003c\/li\u003e\n\u003cli\u003eTurntables without a phono preamp\u003c\/li\u003e\n\u003cli\u003eSystems requiring USB, optical or coaxial digital inputs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/P3_002_92e0aac6-b04e-4159-a0fa-2128faee15ba.webp?v=1758589515\" alt=\"Fosi Audio P3 replaceable tube preamplifier and headphone amplifier performance\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/P3_007_c70836f4-e0bc-4b76-a126-0d72e497e3b8.webp?v=1758589515\" alt=\"Fosi Audio P3 Bluetooth, RCA, headphone, RCA and AUX connections\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/P3_008_a684dbd8-5d90-4cef-b551-8cbf3fbb4240.webp?v=1758589515\" alt=\"Fosi Audio P3 headphone, powered speaker and power amplifier setup scenarios\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eP3 is a preamplifier\/headphone amplifier, not a speaker power amplifier.\u003c\/li\u003e\n\u003cli\u003eIts RCA input is line level; a standard turntable needs a phono preamp.\u003c\/li\u003e\n\u003cli\u003eRCA and AUX are downstream outputs, while the front 3.5mm jack is for headphones.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan P3 drive passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. Connect it to a separate power amplifier or powered speakers.\u003c\/p\u003e\u003ch3\u003eCan I use wired headphones?\u003c\/h3\u003e\u003cp\u003eYes. It supports 16–300Ω headphones through the front 3.5mm output.\u003c\/p\u003e\u003ch3\u003eDoes it accept digital inputs?\u003c\/h3\u003e\u003cp\u003eBluetooth is supported, but there is no USB, optical or coaxial input.\u003c\/p\u003e\u003ch3\u003eCan I connect a turntable?\u003c\/h3\u003e\u003cp\u003eOnly through a built-in or external phono preamp before the RCA input.\u003c\/p\u003e\u003ch3\u003eCan I connect an active subwoofer?\u003c\/h3\u003e\u003cp\u003eThe AUX or RCA line output can feed compatible downstream equipment; confirm the subwoofer's input and system gain arrangement.\u003c\/p\u003e\u003ch3\u003eAre the tubes replaceable?\u003c\/h3\u003e\u003cp\u003eYes. The supplied 5654W tubes are replaceable with compatible tube types.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003ePower amplifier system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Streamer, DAC or Bluetooth device\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e RCA or Bluetooth\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e RCA output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Power amplifier → passive speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e P3 controls source level; the power amplifier drives the speakers.\u003c\/p\u003e\u003ch3\u003ePowered speaker system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Phone, streamer or DAC\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Bluetooth or RCA\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e RCA or AUX output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Powered speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Begin with low volume on both devices.\u003c\/p\u003e\u003ch3\u003eHeadphone setup\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Phone, streamer or DAC\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Bluetooth or RCA\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e 3.5mm headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e 16–300Ω wired headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use the front volume and tone controls.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAudio performance\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eTube preamplifier \/ headphone amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadphone impedance\u003c\/td\u003e\n\u003ctd\u003e16–300Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadphone output\u003c\/td\u003e\n\u003ctd\u003e250mW at 16Ω; 150mW at 32Ω; 32mW at 250Ω; 20mW at 300Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20Hz–20kHz (±1dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSNR\u003c\/td\u003e\n\u003ctd\u003e≥103dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e≤0.02%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic range\u003c\/td\u003e\n\u003ctd\u003e104dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrosstalk\u003c\/td\u003e\n\u003ctd\u003e95dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eConnectivity and power\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eBluetooth 5.1, RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003eRCA, AUX, 3.5mm headphone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth chip\u003c\/td\u003e\n\u003ctd\u003eQualcomm QCC3031\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth codecs\u003c\/td\u003e\n\u003ctd\u003eSBC, AAC, aptX, aptX HD, aptX LL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth range\u003c\/td\u003e\n\u003ctd\u003e≥10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower input\u003c\/td\u003e\n\u003ctd\u003eDC 12V \/ 1.5A–3A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSetup\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStereo preamp\u003c\/td\u003e\n\u003ctd\u003eSource → P3 → Power amplifier → Passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActive speakers\u003c\/td\u003e\n\u003ctd\u003eSource → P3 → Powered speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadphones\u003c\/td\u003e\n\u003ctd\u003eSource → P3 → Wired headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eFosi Audio product comparison\u003c\/h3\u003e\u003cp\u003eCompare Fosi Audio compact preamplifier and tube DAC options by the capabilities that determine how they fit into a system.\u003c\/p\u003e\u003cdiv style=\"max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"min-width:760px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"min-width:150px;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eP3\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eP4\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eGR40\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct position\u003c\/th\u003e\n\u003ctd\u003eTube preamp + headphone amp\u003c\/td\u003e\n\u003ctd\u003eSolid-state analog preamp\u003c\/td\u003e\n\u003ctd\u003eTube DAC + headphone amp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAnalog inputs\u003c\/th\u003e\n\u003ctd\u003eRCA\u003c\/td\u003e\n\u003ctd\u003eRCA × 3\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDigital \/ wireless inputs\u003c\/th\u003e\n\u003ctd\u003eBluetooth 5.1\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eBluetooth, USB, optical, coaxial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMain outputs\u003c\/th\u003e\n\u003ctd\u003eRCA, AUX\u003c\/td\u003e\n\u003ctd\u003eRCA, pre-out\u003c\/td\u003e\n\u003ctd\u003eRCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeadphone output\u003c\/th\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpeaker amplification\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTube stage\u003c\/th\u003e\n\u003ctd\u003eYes, replaceable 5654W\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTone controls\u003c\/th\u003e\n\u003ctd\u003eBass and treble\u003c\/td\u003e\n\u003ctd\u003eBass and treble with bypass\u003c\/td\u003e\n\u003ctd\u003eBass and treble\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRemote control\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSNR\u003c\/th\u003e\n\u003ctd\u003e≥103dB\u003c\/td\u003e\n\u003ctd\u003e≥110dB\u003c\/td\u003e\n\u003ctd\u003e≥103dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBest use\u003c\/th\u003e\n\u003ctd\u003eBluetooth tube preamp and headphones\u003c\/td\u003e\n\u003ctd\u003eMultiple analog source control\u003c\/td\u003e\n\u003ctd\u003eDigital sources with tube conversion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43674001866845,"sku":"Fosi-Audio-P3-Black-US","price":79.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43674001899613,"sku":"Fosi-Audio-P3-Black-UK","price":79.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43674001932381,"sku":"Fosi-Audio-P3-Black-AU","price":79.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43674001965149,"sku":"Fosi-Audio-P3-Black-EU","price":79.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_P3.webp?v=1784691882"},{"product_id":"fosi-audio-ht4s","title":"Fosi Audio HT4S","description":"\u003cp\u003eFosi Audio HT4S is a compact 4.1\/5.0-channel integrated amplifier for multi-speaker, outdoor-audio and simulator systems.\u003c\/p\u003e\n\u003cp\u003eBluetooth, optical and 3.5mm inputs, five amplified channels and a switchable sub\/center channel create a flexible multi-speaker system without a full-size AV receiver.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\n\u003ch3\u003eSwitchable 4.1 or 5.0 operation\u003c\/h3\u003e\n\u003cp\u003eConfigure four main speakers plus a subwoofer channel, or use five full-range speaker channels.\u003c\/p\u003e\n\u003ch3\u003eBuilt-in multi-channel power\u003c\/h3\u003e\n\u003cp\u003eProvides four 30W channels plus a 60W sub channel in 4.1 mode, or five 30W channels in 5.0 mode.\u003c\/p\u003e\n\u003ch3\u003eDigital and wireless inputs\u003c\/h3\u003e\n\u003cp\u003eConnect optical PCM, 3.5mm analog or Bluetooth sources.\u003c\/p\u003e\n\u003ch3\u003eRemote and front-panel control\u003c\/h3\u003e\n\u003cp\u003eAdjust source, volume, tone and operation without a separate controller.\u003c\/p\u003e\n\u003ch2\u003eBest for\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOutdoor and patio multi-speaker systems\u003c\/li\u003e\n\u003cli\u003eSim-racing bass-shaker installations\u003c\/li\u003e\n\u003cli\u003eCompact 4.1 or 5.0 speaker systems\u003c\/li\u003e\n\u003cli\u003eTV systems with optical PCM output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDolby or DTS surround decoding\u003c\/li\u003e\n\u003cli\u003eSystems requiring HDMI ARC\u003c\/li\u003e\n\u003cli\u003eSpeakers below the specified 4Ω minimum\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_HT4S-Product_Overview.webp?v=1790751838\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_HT4S-Key_Features.webp?v=1790751837\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_HT4S-connectivity.webp?v=1790751836\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_HT4S-Core_Technology.webp?v=1790751837\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_HT4S-World_Setup.webp?v=1790751838\" alt=\"\"\u003e\n\u003c\/h2\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHT4S is a multi-channel amplifier, not an HDMI adapter or surround-sound decoder.\u003c\/li\u003e\n\u003cli\u003eSet the source to PCM stereo when using optical; encoded Dolby\/DTS signals are not supported.\u003c\/li\u003e\n\u003cli\u003eThe SUB\/CEN output changes function with the selected mode, so confirm the switch setting before connecting speakers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media(max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important}}.emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\n\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin: 32px 0;\"\u003e\n\u003cp style=\"margin: 24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudio-HT4S002.webp?v=1758599535\" alt=\"HT4S Multi-Channel Power Amplifier\" loading=\"lazy\" style=\"display: block; width: 100%; max-width: 1100px; height: auto; margin: 0 auto;\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudio-HT4S003.webp?v=1758599535\" alt=\"A 5-Channel Patio Audio Solution\" loading=\"lazy\" style=\"display: block; width: 100%; max-width: 1100px; height: auto; margin: 0 auto;\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 24px auto;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudio-HT4S005.webp?v=1758599535\" alt=\"Multi-Function Integrated Amplifier\" loading=\"lazy\" style=\"display: block; width: 100%; max-width: 1100px; height: auto; margin: 0 auto;\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eDoes HT4S have HDMI?\u003c\/h3\u003e\n\u003cp\u003eNo. Inputs are Bluetooth, optical and 3.5mm AUX.\u003c\/p\u003e\n\u003ch3\u003eDoes it decode Dolby or DTS?\u003c\/h3\u003e\n\u003cp\u003eNo. Use a compatible PCM signal.\u003c\/p\u003e\n\u003ch3\u003eCan it run five passive speakers?\u003c\/h3\u003e\n\u003cp\u003eYes, in 5.0 mode with compatible 4–8Ω speakers.\u003c\/p\u003e\n\u003ch3\u003eCan it power a passive subwoofer?\u003c\/h3\u003e\n\u003cp\u003eYes, in 4.1 mode through the dedicated amplified SUB\/CEN channel.\u003c\/p\u003e\n\u003ch3\u003eDoes it have a line output?\u003c\/h3\u003e\n\u003cp\u003eYes, a 3.5mm pre-out is provided.\u003c\/p\u003e\n\u003ch3\u003eCan it be used outdoors?\u003c\/h3\u003e\n\u003cp\u003eIt can power outdoor speakers, but the amplifier itself should remain protected indoors.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\n\u003ch3\u003eOptical TV system\u003c\/h3\u003e\n\u003cp\u003eSource icon: tv\u003cbr\u003eSource: TV \/ projector\u003cbr\u003eConnection: Optical PCM\u003cbr\u003eOutput connection: Speaker terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Four or five passive speakers\u003c\/p\u003e\n\u003ch3\u003eOutdoor multi-speaker system\u003c\/h3\u003e\n\u003cp\u003eSource icon: phone\u003cbr\u003eSource: Phone \/ streamer\u003cbr\u003eConnection: Bluetooth or AUX\u003cbr\u003eOutput connection: Speaker terminals\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Outdoor passive speakers\u003c\/p\u003e\n\u003ch3\u003eSim-racing system\u003c\/h3\u003e\n\u003cp\u003eSource icon: computer\u003cbr\u003eSource: PC \/ simulator audio\u003cbr\u003eConnection: Optical, AUX or Bluetooth\u003cbr\u003eOutput connection: Speaker and SUB\/CEN outputs\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Speakers and compatible bass shaker \/ passive subwoofer\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ch3\u003eConnections\u003c\/h3\u003e\n\u003cdiv style=\"width: 100%; overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; table-layout: fixed;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 42%; padding: 11px; border: 1px solid #ddd; text-align: left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding: 11px; border: 1px solid #ddd; text-align: left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 11px; border: 1px solid #ddd; text-align: left;\"\u003eInputs\u003c\/th\u003e\n\u003ctd style=\"padding: 11px; border: 1px solid #ddd;\"\u003eBluetooth; optical; 3.5mm AUX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 11px; border: 1px solid #ddd; text-align: left;\"\u003eOutputs\u003c\/th\u003e\n\u003ctd style=\"padding: 11px; border: 1px solid #ddd;\"\u003eFive speaker channels; 3.5mm pre-out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 11px; border: 1px solid #ddd; text-align: left;\"\u003eSpeaker impedance\u003c\/th\u003e\n\u003ctd style=\"padding: 11px; border: 1px solid #ddd;\"\u003e4–8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eAmplification and physical\u003c\/h3\u003e\n\u003cdiv style=\"width: 100%; overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; table-layout: fixed;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 42%; padding: 11px; border: 1px solid #ddd; text-align: left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding: 11px; border: 1px solid #ddd; text-align: left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 11px; border: 1px solid #ddd; text-align: left;\"\u003e4.1 rated output\u003c\/th\u003e\n\u003ctd style=\"padding: 11px; border: 1px solid #ddd;\"\u003e30W × 4 + 60W × 1 @ 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 11px; border: 1px solid #ddd; text-align: left;\"\u003e5.0 rated output\u003c\/th\u003e\n\u003ctd style=\"padding: 11px; border: 1px solid #ddd;\"\u003e30W × 5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 11px; border: 1px solid #ddd; text-align: left;\"\u003eMaximum output\u003c\/th\u003e\n\u003ctd style=\"padding: 11px; border: 1px solid #ddd;\"\u003e50W × 5 @ 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 11px; border: 1px solid #ddd; text-align: left;\"\u003eSNR\u003c\/th\u003e\n\u003ctd style=\"padding: 11px; border: 1px solid #ddd;\"\u003e≥88dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 11px; border: 1px solid #ddd; text-align: left;\"\u003eTHD\u003c\/th\u003e\n\u003ctd style=\"padding: 11px; border: 1px solid #ddd;\"\u003e≤0.03%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 11px; border: 1px solid #ddd; text-align: left;\"\u003eAC input\u003c\/th\u003e\n\u003ctd style=\"padding: 11px; border: 1px solid #ddd;\"\u003e110–240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding: 11px; border: 1px solid #ddd; text-align: left;\"\u003eDimensions\u003c\/th\u003e\n\u003ctd style=\"padding: 11px; border: 1px solid #ddd;\"\u003e6.1 × 7.2 × 2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\n\u003ch3\u003eComparison: Which Fosi Audio model is right for you?\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; min-width: 680px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eHT4S\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eBT30D\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eBT30D Pro\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eSystem type\u003c\/th\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003e4.1 \/ 5.0 multi-speaker\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003e2.1 stereo\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eHigher-output 2.1 stereo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eDigital input\u003c\/th\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eOptical\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eNone\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eAmplified outputs\u003c\/th\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eUp to five channels\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eStereo + passive subwoofer\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eStereo + passive subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eMaximum stated output\u003c\/th\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003e50W × 5 @ 4Ω\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003e50W × 2 + 100W\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003e165W × 2 + 350W @ 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eBest use\u003c\/th\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eOutdoor, sim racing, multi-speaker\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eCompact moderate-output 2.1\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\"\u003eHigher-output 2.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43722614079581,"sku":"Fosi-Audio-HT4S-Black-US","price":156.47,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43722614112349,"sku":"Fosi-Audio-HT4S-Black-EU","price":140.39,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43722614177885,"sku":"Fosi-Audio-HT4S-Black-UK","price":140.39,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43722614145117,"sku":"Fosi-Audio-HT4S-Black-AU","price":140.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_HT4S_8f975965-b39e-4a86-b4cb-185ee38f93c9.webp?v=1785223557"},{"product_id":"fosi-audio-n3","title":"Fosi Audio N3 – Portable Bluetooth Headphone Amp \u0026 Receiver with Bass-Boost","description":"\u003ch2 data-path-to-node=\"7\"\u003e1. Versatile Hub for Your Desktop Audio\u003c\/h2\u003e\n\u003cp data-path-to-node=\"8\"\u003eThe \u003cb data-path-to-node=\"8\" data-index-in-node=\"4\"\u003eFosi Audio N3\u003c\/b\u003e is a multi-functional audio converter designed to bridge the gap between your digital devices and traditional Hi-Fi systems. Whether you need a high-quality \u003cb data-path-to-node=\"8\" data-index-in-node=\"175\"\u003eBluetooth receiver\u003c\/b\u003e, a dedicated \u003cb data-path-to-node=\"8\" data-index-in-node=\"207\"\u003eDAC\u003c\/b\u003e, or a powerful \u003cb data-path-to-node=\"8\" data-index-in-node=\"226\"\u003eheadphone amplifier\u003c\/b\u003e, the N3 packs all these features into a palm-sized, premium aluminum enclosure.\u003c\/p\u003e\n\u003ch2 data-path-to-node=\"9\"\u003e2. Key Features \u0026amp; Audiophile Benefits\u003c\/h2\u003e\n\u003ch4 data-path-to-node=\"10\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003eSeamless Wireless Connectivity\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul data-path-to-node=\"11\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,0,0\"\u003e\u003cb data-path-to-node=\"11,0,0\" data-index-in-node=\"0\"\u003eAdvanced Bluetooth 5.0:\u003c\/b\u003e Equipped with a high-performance Bluetooth chip and an external \u003cb data-path-to-node=\"11,0,0\" data-index-in-node=\"88\"\u003ehigh-gain antenna\u003c\/b\u003e, the N3 ensures a stable, long-range connection (up to 50ft) with ultra-low latency.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,1,0\"\u003e\u003cb data-path-to-node=\"11,1,0\" data-index-in-node=\"0\"\u003eLossless Streaming:\u003c\/b\u003e Enjoy CD-quality wireless audio from your smartphone, tablet, or PC directly to your vintage amplifier or active speakers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-path-to-node=\"12\"\u003e\u003cb data-path-to-node=\"12\" data-index-in-node=\"0\"\u003eHigh-Resolution Digital-to-Analog Conversion\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul data-path-to-node=\"13\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,0,0\"\u003e\u003cb data-path-to-node=\"13,0,0\" data-index-in-node=\"0\"\u003ePrecision DAC Chipset:\u003c\/b\u003e The internal circuitry is optimized to reduce jitter and distortion, providing a cleaner, more detailed soundstage compared to standard onboard computer audio or phone jacks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,1,0\"\u003e\u003cb data-path-to-node=\"13,1,0\" data-index-in-node=\"0\"\u003eMultiple Input Options:\u003c\/b\u003e Beyond Bluetooth, the N3 supports various digital inputs, making it a flexible tool for upgrading audio from TVs, game consoles, and media players.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-path-to-node=\"14\"\u003e\u003cb data-path-to-node=\"14\" data-index-in-node=\"0\"\u003ePowerful Headphone Amplification\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul data-path-to-node=\"15\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,0,0\"\u003e\u003cb data-path-to-node=\"15,0,0\" data-index-in-node=\"0\"\u003eDrive with Authority:\u003c\/b\u003e The dedicated headphone amp stage is designed to drive a wide range of headphones (16-300Ω), delivering clear highs and controlled bass without background hiss.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,1,0\"\u003e\u003cb data-path-to-node=\"15,1,0\" data-index-in-node=\"0\"\u003eIntuitive Control:\u003c\/b\u003e A smooth, tactile volume knob provides precise adjustment, giving you full command over your personal listening experience.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-path-to-node=\"16\"\u003e3. Technical Specifications\u003c\/h2\u003e\n\u003ctable data-path-to-node=\"17\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComponent\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,1,0,0\"\u003e\u003cb data-path-to-node=\"17,1,0,0\" data-index-in-node=\"0\"\u003eInput Options\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,1,1,0\"\u003eBluetooth 5.0, Optical, Coaxial\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,2,0,0\"\u003e\u003cb data-path-to-node=\"17,2,0,0\" data-index-in-node=\"0\"\u003eOutput Options\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,2,1,0\"\u003eRCA Stereo, 3.5mm Headphone Jack\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,3,0,0\"\u003e\u003cb data-path-to-node=\"17,3,0,0\" data-index-in-node=\"0\"\u003eBluetooth Range\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,3,1,0\"\u003eUp to 50ft (15m)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,4,0,0\"\u003e\u003cb data-path-to-node=\"17,4,0,0\" data-index-in-node=\"0\"\u003eHeadphone Impedance\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,4,1,0\"\u003e16Ω - 300Ω\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,5,0,0\"\u003e\u003cb data-path-to-node=\"17,5,0,0\" data-index-in-node=\"0\"\u003eChassis Material\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,5,1,0\"\u003eCNC Machined Aluminum Alloy\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,6,0,0\"\u003e\u003cb data-path-to-node=\"17,6,0,0\" data-index-in-node=\"0\"\u003ePower Supply\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"17,6,1,0\"\u003e5V (USB-C Powered)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 data-path-to-node=\"18\"\u003e4. Why Add the N3 to Your Setup?\u003c\/h2\u003e\n\u003cp data-path-to-node=\"19\"\u003eThe Fosi Audio N3 is the ultimate \"Swiss Army Knife\" for audio enthusiasts. It breathes new life into older analog equipment by adding modern wireless capabilities and significantly improves the sound quality of your daily desktop devices. It's the most cost-effective way to start your Hi-Fi journey.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":43722618503261,"sku":"Fosi-Audio-N3-Black","price":49.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioN3_001.webp?v=1758601039"},{"product_id":"fosi-audio-za3","title":"Fosi Audio ZA3","description":"\u003cp\u003eFosi Audio ZA3 is a balanced Class D power amplifier that operates in stereo or high-power mono mode.\u003c\/p\u003e\u003cp\u003eIts TPA3255 platform, XLR\/TRS and RCA inputs, active-subwoofer output and scalable architecture make it a flexible foundation for compact HiFi systems.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003cp\u003eFour reasons this product deserves a place in a well-planned audio system.\u003c\/p\u003e\u003ch3\u003eStereo or Mono Operation\u003c\/h3\u003e\u003cp\u003eUse one ZA3 for a conventional stereo system or two units in mono mode for a scalable dual-mono installation.\u003c\/p\u003e\u003ch3\u003eBalanced XLR\/TRS Input\u003c\/h3\u003e\u003cp\u003eThe combo balanced input helps reject interference and integrates with balanced DACs and preamplifiers.\u003c\/p\u003e\u003ch3\u003eActive Subwoofer Output\u003c\/h3\u003e\u003cp\u003eA dedicated line-level output simplifies adding a powered subwoofer to a stereo system.\u003c\/p\u003e\u003ch3\u003eReplaceable Op-Amps\u003c\/h3\u003e\u003cp\u003eSocketed op-amps let experienced users experiment with compatible DIP8 dual op-amps.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBalanced DAC and preamp systems\u003c\/li\u003e\n\u003cli\u003eStereo passive-speaker systems\u003c\/li\u003e\n\u003cli\u003eDual-mono amplifier upgrades\u003c\/li\u003e\n\u003cli\u003e2.1 systems using a powered subwoofer\u003c\/li\u003e\n\u003cli\u003eInstallations using 12V trigger control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUsers expecting Bluetooth, USB or digital inputs\u003c\/li\u003e\n\u003cli\u003eBuyers needing a headphone output\u003c\/li\u003e\n\u003cli\u003ePassive subwoofers without their own amplifier\u003c\/li\u003e\n\u003cli\u003eBuyers who have not checked whether their variant includes a power adapter\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_ZA3_013.webp\" alt=\"Fosi Audio ZA3 TPA3255 amplifier chip and low-distortion performance\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_ZA3_015.webp\" alt=\"Fosi Audio ZA3 12V trigger synchronization interface\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_ZA3_008.webp\" alt=\"Fosi Audio ZA3 balanced stereo and mono power amplifier system\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eZA3 is a power amplifier and requires an external source or preamp with suitable volume control.\u003c\/li\u003e\n\u003cli\u003eThe subwoofer output is line level and is only for a powered subwoofer.\u003c\/li\u003e\n\u003cli\u003eCheck the selected variant: amplifier-only, 32V\/5A and 48V\/5A power options are listed separately.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eCan one ZA3 power a stereo pair?\u003c\/h3\u003e\u003cp\u003eYes. Use stereo mode to power left and right passive speakers from one unit.\u003c\/p\u003e\u003ch3\u003eWhen are two ZA3 amplifiers required?\u003c\/h3\u003e\u003cp\u003eUse two units when building a dual-mono stereo system, with one amplifier assigned to each channel.\u003c\/p\u003e\u003ch3\u003eCan it connect to an XLR source?\u003c\/h3\u003e\u003cp\u003eYes. The balanced combo input supports XLR and 1\/4-inch TRS connections.\u003c\/p\u003e\u003ch3\u003eCan it power a passive subwoofer?\u003c\/h3\u003e\u003cp\u003eNo. Its subwoofer output is line level and requires a powered subwoofer.\u003c\/p\u003e\u003ch3\u003eDoes it include Bluetooth or a DAC?\u003c\/h3\u003e\u003cp\u003eNo. Connect an external DAC, streamer or preamplifier through RCA or balanced input.\u003c\/p\u003e\u003ch3\u003eDoes every option include a power supply?\u003c\/h3\u003e\u003cp\u003eNo. Verify the selected product variant before ordering.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eBalanced stereo system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Balanced DAC or preamp\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e XLR \/ 1\/4-inch TRS\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Passive speaker pair\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Set ZA3 to stereo mode.\u003c\/p\u003e\u003ch3\u003eDual-mono system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Balanced DAC or preamp\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e One balanced channel to each ZA3\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminal in mono configuration\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e One passive speaker per amplifier\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use two ZA3 units and set both to mono mode.\u003c\/p\u003e\u003ch3\u003e2.1 stereo system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e DAC \/ preamp\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e RCA or balanced input\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker outputs plus sub-out\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Passive speakers and powered subwoofer\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Do not connect a passive subwoofer to sub-out.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAmplifier\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eStereo\/mono Class D power amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAmplifier Chip\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTexas Instruments TPA3255\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSpeaker Impedance\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e2–8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eModes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eStereo \/ PBTL mono\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003ePerformance\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRated Output with 48V\/5A\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e155W x2 at 4Ω stereo; 235W x1 at 4Ω mono\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRated Output with 32V\/5A\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e95W x2 at 4Ω stereo; 110W x1 at 4Ω mono\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e20Hz–20kHz (±0.1dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSINAD\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e89dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSNR\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≥106dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTHD\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e\u0026lt;0.006%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDynamic Range\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≥106dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eConnectivity and Power\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRCA; XLR \/ 1\/4-inch TRS balanced combo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eOutputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePassive speakers; active subwoofer line output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTrigger\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e12V trigger input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDC Input Range\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e24–48V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePower Options\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e32V\/5A or 48V\/5A; variant dependent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSetup\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eStereo HiFi\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDAC\/preamp → ZA3 stereo mode → passive speaker pair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDual mono\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBalanced preamp → two ZA3 units → passive speaker pair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e2.1 system\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSource\/preamp → ZA3 → passive speakers + powered subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eZA3\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eV3 Mono\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eTB10D\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAmplifier Format\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eStereo \/ mono selectable\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eMonoblock\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eStereo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAmplifier Chip\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTPA3255\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTPA3255\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTPA3255\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eXLR\/TRS, RCA\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eXLR, RCA\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eStereo from One Unit\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eMono Mode\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAlways mono\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eActive Subwoofer Output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e12V Trigger\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eInput\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTone Controls\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBass, treble\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eOp-Amp Rolling\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBest Use\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eFlexible balanced stereo\/mono\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDedicated monoblocks\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSimple adjustable stereo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"ZA3(N0 Power supply Unit) \/ US","offer_id":43670992912477,"sku":"Fosi-Audio-ZA3-ZA3-N0-Power-supply-Unit-US","price":109.99,"currency_code":"USD","in_stock":true},{"title":"ZA3(N0 Power supply Unit) \/ EU","offer_id":43722619813981,"sku":"Fosi-Audio-ZA3-ZA3-N0-Power-supply-Unit-EU","price":109.99,"currency_code":"USD","in_stock":true},{"title":"ZA3(N0 Power supply Unit) \/ AU","offer_id":43722619846749,"sku":"Fosi-Audio-ZA3-ZA3-N0-Power-supply-Unit-AU","price":109.99,"currency_code":"USD","in_stock":true},{"title":"ZA3(N0 Power supply Unit) \/ UK","offer_id":43722619879517,"sku":"Fosi-Audio-ZA3-ZA3-N0-Power-supply-Unit-UK","price":109.99,"currency_code":"USD","in_stock":true},{"title":"ZA3+32V\/5A PSU \/ US","offer_id":43722619912285,"sku":"Fosi-Audio-ZA3-ZA3-32V-5A-PSU-US","price":129.99,"currency_code":"USD","in_stock":true},{"title":"ZA3+32V\/5A PSU \/ EU","offer_id":43722619945053,"sku":"Fosi-Audio-ZA3-ZA3-32V-5A-PSU-EU","price":129.99,"currency_code":"USD","in_stock":true},{"title":"ZA3+32V\/5A PSU \/ AU","offer_id":43722619977821,"sku":"Fosi-Audio-ZA3-ZA3-32V-5A-PSU-AU","price":129.99,"currency_code":"USD","in_stock":true},{"title":"ZA3+32V\/5A PSU \/ UK","offer_id":43722620010589,"sku":"Fosi-Audio-ZA3-ZA3-32V-5A-PSU-UK","price":129.99,"currency_code":"USD","in_stock":true},{"title":"ZA3+48V\/5A PSU \/ US","offer_id":43722620043357,"sku":"Fosi-Audio-ZA3-ZA3-48V-5A-PSU-US","price":149.99,"currency_code":"USD","in_stock":true},{"title":"ZA3+48V\/5A PSU \/ EU","offer_id":43722620076125,"sku":"Fosi-Audio-ZA3-ZA3-48V-5A-PSU-EU","price":149.99,"currency_code":"USD","in_stock":true},{"title":"ZA3+48V\/5A PSU \/ AU","offer_id":43722620108893,"sku":"Fosi-Audio-ZA3-ZA3-48V-5A-PSU-AU","price":149.99,"currency_code":"USD","in_stock":true},{"title":"ZA3+48V\/5A PSU \/ UK","offer_id":43722620141661,"sku":"Fosi-Audio-ZA3-ZA3-48V-5A-PSU-UK","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_ZA3_30f5423c-9716-4522-98ad-6eb6aead5305.webp?v=1785382388"},{"product_id":"fosi-audio-t20","title":"Fosi Audio T20","description":"\u003cp\u003eFosi Audio T20 is a compact Bluetooth tube integrated amplifier for passive speakers and wired headphones.\u003c\/p\u003e\n\u003cp\u003eIt combines 50W x2 Class D speaker power with replaceable vacuum tubes, RCA input and tone controls for a warm, flexible desktop stereo system.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\n\u003cp\u003eFour reasons this product deserves a place in a well-planned audio system.\u003c\/p\u003e\n\u003ch3\u003eTube-Buffered Sound\u003c\/h3\u003e\n\u003cp\u003eReplaceable vacuum tubes add the tube stage and allow compatible tube rolling.\u003c\/p\u003e\n\u003ch3\u003eSpeaker and Headphone Listening\u003c\/h3\u003e\n\u003cp\u003eThe T20 powers passive speakers and also provides a front 3.5mm headphone output.\u003c\/p\u003e\n\u003ch3\u003eBluetooth and RCA Inputs\u003c\/h3\u003e\n\u003cp\u003eSwitch between convenient wireless playback and a conventional analog source.\u003c\/p\u003e\n\u003ch3\u003eCompact Tone Control\u003c\/h3\u003e\n\u003cp\u003eIndependent bass and treble controls make it easier to adapt the system to speakers, headphones and room acoustics.\u003c\/p\u003e\n\u003ch2\u003eBest for\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDesktop passive-speaker systems\u003c\/li\u003e\n\u003cli\u003eBluetooth music playback\u003c\/li\u003e\n\u003cli\u003eHeadphone and speaker listening from one compact amplifier\u003c\/li\u003e\n\u003cli\u003eListeners interested in compatible tube rolling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUsers requiring optical, USB or HDMI inputs\u003c\/li\u003e\n\u003cli\u003eBalanced XLR audio systems\u003c\/li\u003e\n\u003cli\u003eTurntables without a built-in or external phono preamp\u003c\/li\u003e\n\u003cli\u003eUsers needing a dedicated subwoofer output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"emiuzek-product-content-images\" style=\"width: 100%; max-width: 1100px; margin: 8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_T20-Product_Overview.webp?v=1790751625\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_T20-Key_Features.webp?v=1790751624\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_T20-connectivity.webp?v=1790751624\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_T20-Core_Technology.webp?v=1790751624\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_T20X-World_Setup.webp?v=1790751625\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/O1CN01MCKB0l27FKzmXgbBE__2208567707767-0-cib.webp?v=1759027206\" alt=\"Fosi Audio T20 controls, connections and technical details\" loading=\"lazy\" style=\"display: block; width: 100%; max-width: 1100px; height: auto; margin: 0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi-Audio-T20-Bluetooth-Vacuum-Tube-Amplifier-AptX-HD-Stereo-Power-Amp-50W-TPA3116-Headphone-Amplifier_jpg__avif.webp?v=1766470699\" alt=\"Fosi Audio T20 Bluetooth tube amplifier interface\" loading=\"lazy\" style=\"display: block; width: 100%; max-width: 1100px; height: auto; margin: 0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/O1CN01pEjf4V27FKzoXZv6s__2208567707767-0-cib.webp?v=1759027206\" alt=\"Fosi Audio T20 integrated into a compact home audio system\" loading=\"lazy\" style=\"display: block; width: 100%; max-width: 1100px; height: auto; margin: 0 auto 24px;\"\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eT20 is an integrated speaker amplifier and can directly drive compatible 4–8Ω passive speakers.\u003c\/li\u003e\n\u003cli\u003eIts RCA input is line level; a conventional turntable requires a separate phono preamplifier.\u003c\/li\u003e\n\u003cli\u003eThe 3.5mm jack is a headphone output, not a microphone connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eCan the T20 drive passive speakers directly?\u003c\/h3\u003e\n\u003cp\u003eYes. Connect a compatible 4–8Ω passive speaker pair to the rear speaker terminals.\u003c\/p\u003e\n\u003ch3\u003eCan I connect a turntable?\u003c\/h3\u003e\n\u003cp\u003eYes only when the turntable has a built-in phono preamp or is used with an external phono preamp.\u003c\/p\u003e\n\u003ch3\u003eDoes it work as a headphone amplifier?\u003c\/h3\u003e\n\u003cp\u003eYes, it includes a front 3.5mm headphone output.\u003c\/p\u003e\n\u003ch3\u003eDoes it accept digital audio?\u003c\/h3\u003e\n\u003cp\u003eNo. Inputs are Bluetooth and analog RCA; optical and USB audio are not provided.\u003c\/p\u003e\n\u003ch3\u003eCan the tubes be replaced?\u003c\/h3\u003e\n\u003cp\u003eYes. Use only compatible tube types and power the unit off before replacement.\u003c\/p\u003e\n\u003ch3\u003eDoes it have a subwoofer output?\u003c\/h3\u003e\n\u003cp\u003eNo dedicated subwoofer output is specified. Use a subwoofer integration method supported by your wider system.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\n\u003ch3\u003eBluetooth speaker system\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Phone \/ tablet\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Bluetooth\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Passive speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Pair the source and set volume low before playback.\u003c\/p\u003e\n\u003ch3\u003eWired stereo system\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e DAC \/ streamer \/ CD player\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e RCA line input\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Passive speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use a fixed or controlled line-level source.\u003c\/p\u003e\n\u003ch3\u003eHeadphone listening\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Phone via Bluetooth or RCA source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Bluetooth \/ RCA\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e 3.5mm headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Lower volume before inserting headphones.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ch3\u003eAmplifier\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; -webkit-overflow-scrolling: touch;\"\u003e\n\u003ctable style=\"width: 100%; min-width: 680px; border-collapse: collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eBluetooth tube integrated amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eAmplifier Chip\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eTI TPA3116\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eMaximum Speaker Output\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e50W x2 at 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eSpeaker Impedance\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e4–8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eConnectivity\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; -webkit-overflow-scrolling: touch;\"\u003e\n\u003ctable style=\"width: 100%; min-width: 680px; border-collapse: collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eBluetooth 5.0; RCA line input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eOutputs\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003ePassive speaker terminals; 3.5mm headphone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eTone Controls\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eBass and treble\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eAudio\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; -webkit-overflow-scrolling: touch;\"\u003e\n\u003ctable style=\"width: 100%; min-width: 680px; border-collapse: collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eVacuum Tubes\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eReplaceable 6K4 pair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e20Hz–20kHz (±1.5dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eTHD\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e≤0.04%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eSNR\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e≥99dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto; -webkit-overflow-scrolling: touch;\"\u003e\n\u003ctable style=\"width: 100%; min-width: 680px; border-collapse: collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eSetup\u003c\/th\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eWireless stereo\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003ePhone → Bluetooth → T20 → passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eWired stereo\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eStreamer\/DAC → RCA → T20 → passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eHeadphones\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eSource → T20 → 3.5mm headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto; -webkit-overflow-scrolling: touch;\"\u003e\n\u003ctable style=\"width: 100%; min-width: 680px; border-collapse: collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eT20\u003c\/th\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eT20X\u003c\/th\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eP3\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eProduct Position\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e50W x2 tube integrated amp\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e100W x2 tube integrated amp\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eTube preamp \/ headphone amp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003ePassive Speaker Amplifier\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eBluetooth 5.0, RCA\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eBluetooth, AUX\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eBluetooth, RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eSpeaker Output\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e50W x2 max at 4Ω\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e100W x2 max at 4Ω\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eHeadphone Output\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eTone Controls\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eBass, treble\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eBass, treble\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eBass, treble\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eTube Rolling\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eCompatible tubes\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eCompatible tubes\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eCompatible tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eBest Use\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eCompact speaker\/headphone system\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eHigher-power speaker system\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eAdd tube preamp\/headphone stage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43722623483997,"sku":"Fosi-Audio-T20-Black-US","price":99.37,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43722623516765,"sku":"Fosi-Audio-T20-Black-EU","price":89.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43722623549533,"sku":"Fosi-Audio-T20-Black-AU","price":89.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43722623582301,"sku":"Fosi-Audio-T20-Black-UK","price":89.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_T20_af0667e8-0225-42fe-aa14-9406dc6622f3.webp?v=1785381612"},{"product_id":"fosi-t20x","title":"Fosi Audio T20X","description":"\n\u003cp\u003eFosi Audio T20X is a Bluetooth vacuum-tube integrated amplifier for passive speakers and wired headphones.\u003c\/p\u003e\u003cp\u003eIts upgraded 100W x2 output, replaceable tubes and bass\/treble controls create a compact all-in-one amplifier for desktop and bookshelf systems.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003cp\u003eFour reasons this product deserves a place in a well-planned audio system.\u003c\/p\u003e\u003ch3\u003e100W x2 Maximum Output\u003c\/h3\u003e\u003cp\u003eThe Class D power stage provides more headroom than the T20 for compatible passive speakers.\u003c\/p\u003e\u003ch3\u003eReplaceable Tube Stage\u003c\/h3\u003e\u003cp\u003eTube rolling lets experienced users experiment with compatible tube options.\u003c\/p\u003e\u003ch3\u003eTwo Listening Outputs\u003c\/h3\u003e\u003cp\u003eDrive passive speakers or use the 3.5mm headphone connection from the same amplifier.\u003c\/p\u003e\u003ch3\u003eSimple Wireless and Analog Playback\u003c\/h3\u003e\u003cp\u003eBluetooth and analog input cover the most common phone, streamer and DAC setups without a complex interface.\u003c\/p\u003e\n\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBookshelf passive-speaker systems\u003c\/li\u003e\n\u003cli\u003eBluetooth desktop audio\u003c\/li\u003e\n\u003cli\u003eCombined speaker and headphone listening\u003c\/li\u003e\n\u003cli\u003eListeners wanting tube character with higher output than the T20\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUsers requiring optical, USB or HDMI audio\u003c\/li\u003e\n\u003cli\u003eBalanced XLR systems\u003c\/li\u003e\n\u003cli\u003eTurntables without phono amplification\u003c\/li\u003e\n\u003cli\u003eSystems needing a dedicated subwoofer output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"emiuzek-product-content-images\" style=\"width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/T20X001_8.webp?v=1758633206\" alt=\"Fosi Audio T20X Bluetooth 5.0 tube amplifier performance\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/T20X001_3.webp?v=1758633206\" alt=\"Fosi Audio T20X tube amplifier controls and connections\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/T20X001_6.webp?v=1758633206\" alt=\"Fosi Audio T20X in desktop and bookshelf audio scenarios\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eT20X is an integrated amplifier and can directly drive compatible 2–8Ω passive speakers.\u003c\/li\u003e\n\u003cli\u003eIts analog input is line level; use a phono preamp with a conventional turntable.\u003c\/li\u003e\n\u003cli\u003eThe maximum output figure depends on speaker impedance, supply voltage and test conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eCan the T20X drive passive speakers?\u003c\/h3\u003e\u003cp\u003eYes. It is an integrated amplifier with passive-speaker outputs.\u003c\/p\u003e\u003ch3\u003eCan it connect to a turntable?\u003c\/h3\u003e\u003cp\u003eYes when the turntable has a built-in phono preamp or an external phono preamp is used.\u003c\/p\u003e\u003ch3\u003eDoes it include a headphone output?\u003c\/h3\u003e\u003cp\u003eYes, a 3.5mm wired headphone output is provided.\u003c\/p\u003e\u003ch3\u003eDoes it support optical or USB audio?\u003c\/h3\u003e\u003cp\u003eNo. Use Bluetooth or the analog input.\u003c\/p\u003e\u003ch3\u003eCan the vacuum tubes be replaced?\u003c\/h3\u003e\u003cp\u003eYes. Use compatible tubes and switch the amplifier off before tube replacement.\u003c\/p\u003e\u003ch3\u003eCan I connect an active subwoofer?\u003c\/h3\u003e\u003cp\u003eNo dedicated subwoofer output is specified; use a compatible system-level integration method.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eBluetooth stereo\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Phone \/ tablet\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Bluetooth\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Passive speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Keep initial volume low when pairing.\u003c\/p\u003e\u003ch3\u003eWired HiFi\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Streamer \/ DAC \/ CD player\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Analog line input\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker terminals\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Passive speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use a line-level source.\u003c\/p\u003e\u003ch3\u003eHeadphone system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Bluetooth or analog source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Bluetooth \/ line input\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e 3.5mm headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Disconnect or lower speaker listening as appropriate.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAmplifier\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBluetooth tube integrated amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAmplifier Chip\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTI TPA3221\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eMaximum Output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e100W x2 at 4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSpeaker Impedance\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e2–8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eAudio\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e20Hz–20kHz (±1dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTHD\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≤0.3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSNR\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≥86dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eInput Sensitivity\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≤650mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eConnectivity and Power\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBluetooth; analog line input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eOutputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePassive speaker terminals; 3.5mm headphone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e24V\/4.5A included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDC Input Range\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e12–30V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSetup\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eWireless speaker system\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePhone → Bluetooth → T20X → passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eWired stereo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eStreamer\/DAC → line input → T20X → passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eHeadphones\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSource → T20X → 3.5mm headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eT20X\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eT20\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eP3\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eProduct Position\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eHigher-power tube integrated amp\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eCompact tube integrated amp\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTube preamp \/ headphone amp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePassive Speaker Amplifier\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eMaximum Speaker Output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e100W x2 at 4Ω\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e50W x2 at 4Ω\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNot applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBluetooth, line input\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBluetooth 5.0, RCA\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBluetooth, RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eHeadphone Output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTone Controls\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBass, treble\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBass, treble\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBass, treble\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTube Rolling\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eCompatible tubes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eCompatible tubes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eCompatible tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBest Use\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eMore speaker headroom\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eCompact speaker system\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eExisting amplifier \/ active speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43674008551517,"sku":"Fosi-Audio-T20X-Black-US","price":75.06,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43674008584285,"sku":"Fosi-Audio-T20X-Black-UK","price":99.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43674008617053,"sku":"Fosi-Audio-T20X-Black-EU","price":99.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43674008649821,"sku":"Fosi-Audio-T20X-Black-AU","price":99.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_T20X_ea62dc10-377c-49da-8f44-897293c6b544.webp?v=1785381612"},{"product_id":"fosi-ph05","title":"Fosi Audio PH05","description":"\u003cp\u003eFosi Audio PH05 is a one-input, five-output headphone distribution amplifier for sharing one stereo source with up to five listeners.\u003c\/p\u003e\u003cp\u003eFive independently adjustable 310mW channels, master volume and one-touch mute make it useful for group listening, teaching, podcasting and headphone comparison.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eFive independent headphone channels\u003c\/h3\u003e\u003cp\u003eEach 3.5mm output has its own level control for different listeners and headphone sensitivities.\u003c\/p\u003e\u003ch3\u003e310mW per channel\u003c\/h3\u003e\u003cp\u003eAll five outputs provide rated power of 310mW at 32Ω for 16–300Ω headphones.\u003c\/p\u003e\u003ch3\u003eMaster control and instant mute\u003c\/h3\u003e\u003cp\u003eA large master volume knob and one-touch mute simplify group control.\u003c\/p\u003e\u003ch3\u003eLow-noise distribution design\u003c\/h3\u003e\u003cp\u003eNE5532 amplification, 105dB SNR and 0.001% THD preserve a clean shared signal.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGroup listening sessions\u003c\/li\u003e\n\u003cli\u003eStudio or podcast headphone monitoring\u003c\/li\u003e\n\u003cli\u003eTeaching and language labs\u003c\/li\u003e\n\u003cli\u003eComparing several headphones from one source\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCombining several sources into one output\u003c\/li\u003e\n\u003cli\u003eHeadsets requiring microphone pass-through\u003c\/li\u003e\n\u003cli\u003ePassive speakers or speaker-level amplification\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"grid-column:1 \/ -1;width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/PH05_6_ef6c75c3-fdc5-4f58-b84c-1eeee3721ef0.webp?v=1758639104\" alt=\"Fosi Audio PH05 five-channel headphone amplifier low-noise audio performance\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/PH05_8_1a1f6921-a7ac-411b-8aab-56c878f0dd11.webp?v=1758639104\" alt=\"Fosi Audio PH05 input, five headphone outputs and independent volume controls\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/PH05_4_de45e448-856a-42fd-a8ed-94c16aa81802.webp?v=1758639104\" alt=\"Fosi Audio PH05 group listening, podcast monitoring and classroom scenarios\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePH05 is one input to five outputs; it cannot work in reverse as a five-input mixer.\u003c\/li\u003e\n\u003cli\u003eAll outputs are stereo 3.5mm headphone connections and do not carry microphone signals.\u003c\/li\u003e\n\u003cli\u003eSet master and channel volumes low before connecting headphones.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan it accept five sources?\u003c\/h3\u003e\u003cp\u003eNo. PH05 distributes one stereo input to five headphone outputs.\u003c\/p\u003e\u003ch3\u003eCan each listener set a different volume?\u003c\/h3\u003e\u003cp\u003eYes. Each output has an independent level control.\u003c\/p\u003e\u003ch3\u003eDoes it support headset microphones?\u003c\/h3\u003e\u003cp\u003eNo. It carries stereo playback audio only.\u003c\/p\u003e\u003ch3\u003eCan it drive passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. It is a headphone amplifier, not a speaker power amplifier.\u003c\/p\u003e\u003ch3\u003eWhat headphones are supported?\u003c\/h3\u003e\u003cp\u003eFosi specifies 16–300Ω headphones.\u003c\/p\u003e\u003ch3\u003eCan all five outputs be muted together?\u003c\/h3\u003e\u003cp\u003eYes. Use the one-touch mute function.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eGroup listening\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Phone, DAC, mixer or audio interface\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e 3.5mm AUX\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Five 3.5mm outputs\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Up to five headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Start with all channel levels low.\u003c\/p\u003e\u003ch3\u003eStudio monitoring\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Mixer or audio interface\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e 3.5mm stereo line\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Five headphone outputs\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Performers or reviewers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use independent controls for each listener.\u003c\/p\u003e\u003ch3\u003eHeadphone comparison\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Single DAC or player\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e 3.5mm AUX\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Selected headphone outputs\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Multiple headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Level-match carefully before comparing.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAudio performance\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated output\u003c\/td\u003e\n\u003ctd\u003e310mW × 5 at 32Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadphone impedance\u003c\/td\u003e\n\u003ctd\u003e16–300Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSNR \/ Dynamic range\u003c\/td\u003e\n\u003ctd\u003e105dB \/ 105dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e0.001%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSINAD \/ Crosstalk\u003c\/td\u003e\n\u003ctd\u003e90dB \/ 90dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20Hz–20kHz (±0.5dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eConnections and power\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003ctd\u003e3.5mm AUX × 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003e3.5mm headphone × 5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOp-amp\u003c\/td\u003e\n\u003ctd\u003eTI NE5532\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003eDC 12V \/ 1A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSetup\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGroup session\u003c\/td\u003e\n\u003ctd\u003eSource → PH05 → Up to five headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStudio\u003c\/td\u003e\n\u003ctd\u003eAudio interface → PH05 → Performers' headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComparison\u003c\/td\u003e\n\u003ctd\u003eDAC → PH05 → Multiple headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eFosi Audio product comparison\u003c\/h3\u003e\u003cp\u003eCompare the models by the differences that most affect system matching and everyday use.\u003c\/p\u003e\u003cdiv style=\"max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"min-width:860px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"min-width:150px;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003ePH05\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003ePH04\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct position\u003c\/th\u003e\n\u003ctd\u003eFive-channel headphone distributor\u003c\/td\u003e\n\u003ctd\u003eFour-channel headphone distributor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInputs\u003c\/th\u003e\n\u003ctd\u003e1 × 3.5mm stereo\u003c\/td\u003e\n\u003ctd\u003e1 × 3.5mm stereo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeadphone outputs\u003c\/th\u003e\n\u003ctd\u003e5 × 3.5mm\u003c\/td\u003e\n\u003ctd\u003e4 × 3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIndependent volume\u003c\/th\u003e\n\u003ctd\u003eFive channels\u003c\/td\u003e\n\u003ctd\u003eFour channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput power\u003c\/th\u003e\n\u003ctd\u003e310mW per channel at 32Ω\u003c\/td\u003e\n\u003ctd\u003e40mW at 100Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupported impedance\u003c\/th\u003e\n\u003ctd\u003e16–300Ω\u003c\/td\u003e\n\u003ctd\u003eApplication dependent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaster volume\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOne-touch mute\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMicrophone support\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBest use\u003c\/th\u003e\n\u003ctd\u003eFive-listener monitoring\u003c\/td\u003e\n\u003ctd\u003eBasic four-listener distribution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43674010517597,"sku":"Fosi-Audio-PH05-Black-US","price":49.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43674010550365,"sku":"Fosi-Audio-PH05-Black-EU","price":49.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43674010583133,"sku":"Fosi-Audio-PH05-Black-AU","price":49.9,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43674010615901,"sku":"Fosi-Audio-PH05-Black-UK","price":49.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_PH05_1faddb6e-a450-4471-bc45-7760f95013a5.webp?v=1785380489"},{"product_id":"fosi-audio-sk02","title":"Fosi Audio SK02","description":"\u003cp\u003eFosi Audio SK02 is a compact desktop USB and optical DAC\/headphone amplifier with 3.5mm and 4.4mm headphone outputs.\u003c\/p\u003e\u003cp\u003eAn ES9038Q2M DAC, PCM 32-bit\/384kHz and DSD256 decoding plus up to 755mW at 32Ω provide a capable all-in-one source for wired headphones and line-output systems.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eHi-res desktop DAC\u003c\/h3\u003e\u003cp\u003eES9038Q2M conversion supports PCM 384kHz and DSD256 over USB.\u003c\/p\u003e\u003ch3\u003eDual headphone outputs\u003c\/h3\u003e\u003cp\u003e3.5mm single-ended and 4.4mm outputs support a wider range of headphone cables.\u003c\/p\u003e\u003ch3\u003eStrong 4.4mm drive\u003c\/h3\u003e\u003cp\u003eUp to 755mW at 32Ω provides useful power for many full-size headphones.\u003c\/p\u003e\u003ch3\u003eDAC, headphone amp and pre-out\u003c\/h3\u003e\u003cp\u003eThe 3.5mm line output can feed powered speakers or an external amplifier.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDesktop wired headphone systems\u003c\/li\u003e\n\u003cli\u003ePC and Mac high-resolution audio\u003c\/li\u003e\n\u003cli\u003eUsers with 4.4mm headphone cables\u003c\/li\u003e\n\u003cli\u003eDAC\/preamp use with powered speakers or an amplifier\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAnalog source input\u003c\/li\u003e\n\u003cli\u003eBluetooth wireless playback\u003c\/li\u003e\n\u003cli\u003eMicrophone or gaming-chat input\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"grid-column:1 \/ -1;width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudio_SK02_003_57e84bb4-a6ad-4f89-b997-67b84ac5b6a9.webp?v=1758676033\" alt=\"Fosi Audio SK02 ES9038Q2M DAC and high-resolution audio performance\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudio_SK02_006_bc09460f-a499-4039-a02f-da7dcbbef95c.webp?v=1758676033\" alt=\"Fosi Audio SK02 USB, optical, 3.5mm and 4.4mm headphone connections\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudio_SK02_007_e6c255dc-f204-4983-be7b-dc8d0c68dd74.webp?v=1758676033\" alt=\"Fosi Audio SK02 computer, TV, headphone and powered speaker setup\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSK02 accepts USB and optical digital inputs only; it has no analog input.\u003c\/li\u003e\n\u003cli\u003eThe 4.4mm connection is for headphones; verify cable termination before use.\u003c\/li\u003e\n\u003cli\u003eIts 3.5mm output can operate as line out, while optical can also be passed out for a downstream DAC.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan I connect an analog source?\u003c\/h3\u003e\u003cp\u003eNo. Inputs are USB and optical digital audio.\u003c\/p\u003e\u003ch3\u003eDoes it support balanced headphones?\u003c\/h3\u003e\u003cp\u003eIt provides a 4.4mm headphone output; use a correctly terminated compatible cable.\u003c\/p\u003e\u003ch3\u003eCan it feed powered speakers?\u003c\/h3\u003e\u003cp\u003eYes. Use the 3.5mm line output.\u003c\/p\u003e\u003ch3\u003eCan it drive passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. Add a power amplifier.\u003c\/p\u003e\u003ch3\u003eWhat is the USB maximum?\u003c\/h3\u003e\u003cp\u003ePCM 32-bit\/384kHz and DSD256 from compatible software and sources.\u003c\/p\u003e\u003ch3\u003eCan it output optical audio?\u003c\/h3\u003e\u003cp\u003eYes. The shared optical connection supports optical output for compatible downstream equipment.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eComputer headphones\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e PC or Mac\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB-C audio\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e 3.5mm or 4.4mm headphone\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e 16–300Ω headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Select the correct gain and output mode.\u003c\/p\u003e\u003ch3\u003eTV headphones\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e TV or console\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Optical PCM\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Set the source to PCM stereo.\u003c\/p\u003e\u003ch3\u003ePowered speakers\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Computer or optical source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB or optical\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e 3.5mm line out\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Powered speakers or amplifier\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use line-out mode and manage system volume safely.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAudio performance\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDAC chip\u003c\/td\u003e\n\u003ctd\u003eESS ES9038Q2M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB maximum\u003c\/td\u003e\n\u003ctd\u003ePCM 32-bit \/ 384kHz; DSD256\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical maximum\u003c\/td\u003e\n\u003ctd\u003e24-bit \/ 192kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadphone impedance\u003c\/td\u003e\n\u003ctd\u003e16–300Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3.5mm output\u003c\/td\u003e\n\u003ctd\u003e190mW at 32Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4.4mm output\u003c\/td\u003e\n\u003ctd\u003e755mW at 32Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e≤0.001% at 1kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eConnections and physical\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eUSB, optical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003e3.5mm headphone, 4.4mm headphone, 3.5mm line out \/ optical out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20Hz–20kHz (±0.02dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e5V USB-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e121 × 51 × 43mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e380g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSetup\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eComputer headphones\u003c\/td\u003e\n\u003ctd\u003eComputer → USB → SK02 → Headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTV headphones\u003c\/td\u003e\n\u003ctd\u003eTV optical PCM → SK02 → Headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowered speakers\u003c\/td\u003e\n\u003ctd\u003eDigital source → SK02 line out → Powered speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eFosi Audio product comparison\u003c\/h3\u003e\u003cp\u003eCompare the models by the differences that most affect system matching and everyday use.\u003c\/p\u003e\u003cdiv style=\"max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"min-width:860px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"min-width:150px;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eSK02\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eSK01\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eQ4\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct position\u003c\/th\u003e\n\u003ctd\u003eHi-res desktop DAC\/amp\u003c\/td\u003e\n\u003ctd\u003eAnalog headphone amp\/preamp\u003c\/td\u003e\n\u003ctd\u003eEntry DAC\/amp with tone controls\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDAC chip\u003c\/th\u003e\n\u003ctd\u003eES9038Q2M\u003c\/td\u003e\n\u003ctd\u003eNo DAC\u003c\/td\u003e\n\u003ctd\u003e97220-based chipset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMain inputs\u003c\/th\u003e\n\u003ctd\u003eUSB, optical\u003c\/td\u003e\n\u003ctd\u003e3.5mm analog\u003c\/td\u003e\n\u003ctd\u003eUSB, optical, coaxial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUSB maximum\u003c\/th\u003e\n\u003ctd\u003e32-bit \/ 384kHz, DSD256\u003c\/td\u003e\n\u003ctd\u003eNo USB audio\u003c\/td\u003e\n\u003ctd\u003e24-bit \/ 96kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeadphone outputs\u003c\/th\u003e\n\u003ctd\u003e3.5mm, 4.4mm\u003c\/td\u003e\n\u003ctd\u003e3.5mm, 6.35mm\u003c\/td\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum output at 32Ω\u003c\/th\u003e\n\u003ctd\u003e755mW via 4.4mm\u003c\/td\u003e\n\u003ctd\u003e2400mW high gain\u003c\/td\u003e\n\u003ctd\u003e100mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAnalog line output\u003c\/th\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003ctd\u003eRCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTone controls\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eThree-band\u003c\/td\u003e\n\u003ctd\u003eBass and treble\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBattery operation\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBest use\u003c\/th\u003e\n\u003ctd\u003eHi-res desktop headphones\u003c\/td\u003e\n\u003ctd\u003ePowerful analog amplification\u003c\/td\u003e\n\u003ctd\u003eSimple PC\/TV audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":43713461911645,"sku":"Fosi-Audio-SK02-Black","price":100.83,"currency_code":"USD","in_stock":true},{"title":"Orange","offer_id":43713461944413,"sku":"Fosi-Audio-SK02-Orange","price":116.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_SK02_0fc26737-fb8c-40b7-94d2-245bfad66e1b.webp?v=1785381610"},{"product_id":"fosi-k5-pro","title":"Fosi Audio K5 Pro","description":"\u003cp\u003eFosi Audio K5 Pro is a compact gaming DAC and headphone amplifier with USB, optical and coaxial digital inputs.\u003c\/p\u003e\u003cp\u003eA microphone input, RCA output, tone controls and strong 3.5mm headphone amplification provide one control point for PC, console and desktop audio.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eGaming microphone support\u003c\/h3\u003e\u003cp\u003eA dedicated 3.5mm microphone input supports compatible PC and console communication setups.\u003c\/p\u003e\u003ch3\u003eThree digital source inputs\u003c\/h3\u003e\u003cp\u003eSwitch between USB-C, optical and coaxial sources.\u003c\/p\u003e\u003ch3\u003ePowerful headphone output\u003c\/h3\u003e\u003cp\u003eSupports 16–300Ω headphones with up to 500mW at 32Ω.\u003c\/p\u003e\u003ch3\u003eHeadphone and speaker integration\u003c\/h3\u003e\u003cp\u003eUse the 3.5mm headphone output or RCA output for powered speakers and amplifiers.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePC and console gaming\u003c\/li\u003e\n\u003cli\u003eDesktop headphones and powered speakers\u003c\/li\u003e\n\u003cli\u003eTVs with optical PCM output\u003c\/li\u003e\n\u003cli\u003eUsers wanting physical bass and treble controls\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHigh-resolution playback above 24-bit\/192kHz\u003c\/li\u003e\n\u003cli\u003eBalanced headphone connections\u003c\/li\u003e\n\u003cli\u003ePassive speakers without a power amplifier\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThe microphone function works in USB mode and is not available from optical or coaxial inputs.\u003c\/li\u003e\n\u003cli\u003eUSB playback is limited to 24-bit\/96kHz; optical and coaxial support up to 24-bit\/192kHz.\u003c\/li\u003e\n\u003cli\u003eK5 Pro does not power passive speakers directly; connect RCA to powered speakers or an amplifier.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media(max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important}}.emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0\"\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/K5pro_3.webp?v=1758686434\" alt=\"Mini Compact Desktop DAC\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/K5pro_5.webp?v=1758686434\" alt=\"USB DAC Born for Gaming\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/K5pro_7.webp?v=1758686434\" alt=\"Next-Generation DAC Amp\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan it be used with PS5?\u003c\/h3\u003e\u003cp\u003eYes, through a compatible USB connection and system audio settings.\u003c\/p\u003e\u003ch3\u003eDoes the microphone work with optical input?\u003c\/h3\u003e\u003cp\u003eNo. Microphone support is for USB mode.\u003c\/p\u003e\u003ch3\u003eCan it drive 300Ω headphones?\u003c\/h3\u003e\u003cp\u003eYes, the official recommended range is 16–300Ω.\u003c\/p\u003e\u003ch3\u003eCan it connect to powered speakers?\u003c\/h3\u003e\u003cp\u003eYes, through RCA output.\u003c\/p\u003e\u003ch3\u003eDoes it support balanced headphones?\u003c\/h3\u003e\u003cp\u003eNo. The headphone output is 3.5mm single-ended.\u003c\/p\u003e\u003ch3\u003eCan it decode Dolby or DTS from a TV?\u003c\/h3\u003e\u003cp\u003eUse PCM output; multichannel encoded formats are not supported.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003ePC gaming\u003c\/h3\u003e\u003cp\u003eSource icon: computer\u003cbr\u003eSource: PC \/ Mac\u003cbr\u003eConnection: USB-C audio + microphone\u003cbr\u003eOutput connection: 3.5mm headphone output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Gaming headset \/ headphones\u003c\/p\u003e\u003ch3\u003eConsole gaming\u003c\/h3\u003e\u003cp\u003eSource icon: device\u003cbr\u003eSource: Compatible console\u003cbr\u003eConnection: USB audio\u003cbr\u003eOutput connection: 3.5mm headphone output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Gaming headset \/ headphones\u003c\/p\u003e\u003ch3\u003eTV and speaker system\u003c\/h3\u003e\u003cp\u003eSource icon: tv\u003cbr\u003eSource: TV\u003cbr\u003eConnection: Optical PCM\u003cbr\u003eOutput connection: RCA output\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Powered speakers or amplifier\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eInputs and outputs\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eInputs\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003eUSB-C; optical; coaxial; 3.5mm microphone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eOutputs\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e3.5mm headphone; RCA line output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eRecommended headphone impedance\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e16–300Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eDigital and headphone performance\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eUSB maximum\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e24-bit \/ 96kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eOptical\/coaxial maximum\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e24-bit \/ 192kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eOutput power\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e1000mW @ 16Ω; 500mW @ 32Ω; 300mW @ 64Ω; 150mW @ 128Ω; 80mW @ 300Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSNR\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e≥110dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eTHD\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e≤0.003%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003ePower input\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003eDC 5V via USB-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eComparison: Which Fosi Audio model is right for you?\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:680px\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eK5 Pro\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eQ4\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eK7\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePrimary use\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eGaming DAC with microphone\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eSimple desktop DAC\/headphone amp\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePremium HiFi and gaming DAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eInputs\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eUSB, optical, coaxial, microphone\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eUSB, optical, coaxial\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eUSB, optical, coaxial, Bluetooth, microphone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHeadphone output\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e3.5mm and 4.4mm balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMaximum USB playback\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e24-bit \/ 96kHz\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e24-bit \/ 96kHz\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e32-bit \/ 384kHz; DSD256\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBest use\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBudget gaming communication\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBasic music and TV upgrade\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHigh-output balanced desktop system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43673997672541,"sku":"Fosi-Audio-K5-Pro-Black-US","price":54.47,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43673997705309,"sku":"Fosi-Audio-K5-Pro-Black-EU","price":75.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43673997738077,"sku":"Fosi-Audio-K5-Pro-Black-AU","price":75.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43673997770845,"sku":"Fosi-Audio-K5-Pro-Black-UK","price":75.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_K5_Pro_d8a7ff87-6caf-439d-8ab7-0de766f65900.webp?v=1785375627"},{"product_id":"fosi-audio-ds2","title":"Fosi Audio DS2","description":"\u003cp\u003eFosi Audio DS2 (2024) is a portable USB DAC and headphone amplifier for mobile devices and computers.\u003c\/p\u003e\u003cp\u003eDual CS43131 DACs, independent volume control and 3.5mm plus 4.4mm outputs deliver clean, powerful wired headphone playback in a compact dongle.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eDual CS43131 DAC architecture\u003c\/h3\u003e\u003cp\u003eThe current 2024 version uses two Cirrus Logic DAC chips for low-noise conversion.\u003c\/p\u003e\u003ch3\u003eStrong balanced output\u003c\/h3\u003e\u003cp\u003eThe 4.4mm output provides substantially more power than the single-ended connection.\u003c\/p\u003e\u003ch3\u003eIndependent hardware volume\u003c\/h3\u003e\u003cp\u003eDedicated buttons allow finer adjustment without relying only on the source device.\u003c\/p\u003e\u003ch3\u003eHigh-resolution playback\u003c\/h3\u003e\u003cp\u003eSupports PCM up to 32-bit\/384kHz and DSD256.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUSB-C phone and tablet listening\u003c\/li\u003e\n\u003cli\u003eWindows and Mac headphone systems\u003c\/li\u003e\n\u003cli\u003eSensitive IEMs and full-size wired headphones\u003c\/li\u003e\n\u003cli\u003eUsers needing 3.5mm and 4.4mm outputs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBluetooth or wireless headphones\u003c\/li\u003e\n\u003cli\u003eHeadsets requiring microphone support\u003c\/li\u003e\n\u003cli\u003eUsers expecting an internal battery\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThis listing is for the DS2 2024 version with dual CS43131 DACs; older DS2 specifications do not apply.\u003c\/li\u003e\n\u003cli\u003eDS2 draws power from the connected source and can feel warm during normal operation.\u003c\/li\u003e\n\u003cli\u003eLightning devices require a compatible Lightning-to-USB-C OTG cable that may be sold separately.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media(max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important}}.emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0\"\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/DS2-2-666.webp?v=1759025437\" alt=\"Compatible with Your Mobile Phone\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/DS2-2-670.webp?v=1759025453\" alt=\"DualCs43131 Flagship DAc Chips\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/DS2-2-672.webp?v=1759025453\" alt=\"Compatible with Your Tablet PC\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eWhich DAC chips are used?\u003c\/h3\u003e\u003cp\u003eThe current DS2 2024 uses dual CS43131 DACs.\u003c\/p\u003e\u003ch3\u003eWhat is the maximum resolution?\u003c\/h3\u003e\u003cp\u003ePCM up to 32-bit\/384kHz and DSD256.\u003c\/p\u003e\u003ch3\u003eDoes it have a battery?\u003c\/h3\u003e\u003cp\u003eNo. It is powered by the connected USB device.\u003c\/p\u003e\u003ch3\u003eCan it drive 4.4mm balanced headphones?\u003c\/h3\u003e\u003cp\u003eYes, with compatible balanced-wired headphones.\u003c\/p\u003e\u003ch3\u003eCan I use a 3.5mm-to-4.4mm adapter?\u003c\/h3\u003e\u003cp\u003eNo. Use headphones terminated correctly for the selected output.\u003c\/p\u003e\u003ch3\u003eWhy does it feel warm?\u003c\/h3\u003e\u003cp\u003eA moderate temperature rise is normal during high-resolution or higher-output operation.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eUSB-C phone listening\u003c\/h3\u003e\u003cp\u003eSource icon: phone\u003cbr\u003eSource: USB-C phone \/ tablet\u003cbr\u003eConnection: USB-C audio\u003cbr\u003eOutput connection: 3.5mm output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Wired headphones or IEMs\u003c\/p\u003e\u003ch3\u003eBalanced portable listening\u003c\/h3\u003e\u003cp\u003eSource icon: phone\u003cbr\u003eSource: USB-C phone \/ player\u003cbr\u003eConnection: USB-C audio\u003cbr\u003eOutput connection: 4.4mm balanced output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Balanced headphones\u003c\/p\u003e\u003ch3\u003eComputer headphone system\u003c\/h3\u003e\u003cp\u003eSource icon: computer\u003cbr\u003eSource: Windows PC \/ Mac\u003cbr\u003eConnection: USB audio\u003cbr\u003eOutput connection: 3.5mm or 4.4mm output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Wired headphones\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAudio architecture\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eProduct type\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003ePortable USB DAC and headphone amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eDAC chipset\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003eDual CS43131\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eMaximum PCM\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e32-bit \/ 384kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eDSD\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003eDSD64 \/ 128 \/ 256\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eOutputs and performance\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eHeadphone outputs\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e3.5mm single-ended; 4.4mm balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eOutput power\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e128mW @ 32Ω single-ended; 170mW @ 32Ω balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eRecommended impedance\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e16–300Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eSNR\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e≥130dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eTHD+N\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e\u0026lt;0.0002%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eComparison: Which Fosi Audio model is right for you?\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:680px\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDS1\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDS2 2024\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDS3\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePrimary use\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePortable Hi-Res music\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePortable Hi-Res music\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMusic and gaming spatial audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDAC \/ processing\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eESS ES9038Q2M\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDual CS43131\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHardware 7.1 processing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMaximum PCM\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e32-bit \/ 768kHz\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e32-bit \/ 384kHz\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e32-bit \/ 768kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMaximum DSD\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDSD512\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDSD256\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDSD512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMaximum stated output\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e220mW @ 32Ω balanced\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e510mW @ 32Ω balanced (manual)\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e220mW @ 32Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBest use\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eCompact ESS dongle\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHigher-power balanced portable setup\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eGaming effects and spatial audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":43722920886365,"sku":"Fosi-Audio-DS2-Black","price":50.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_DS2.webp?v=1785222651"},{"product_id":"fosi-audio-zp3","title":"Fosi Audio ZP3 – Balanced Preamp Hub with XLR\/RCA \u0026 Sub-Out","description":"\u003cp\u003eThe Fosi Audio ZP3 is a compact, featurerich stereo preamplifier designed to act asthe central control hub for a high-qualitydesktop or home audio system.it bridgesthe gap between your audio sources (likea DAC, phone, or turntable) and a poweramplifier or active speakers, providingsuperior sianal controland sound shaping.\u003cbr\u003eHere are its standout characteristics:\u003cbr\u003e1. Dual Tube \u0026amp; Op-Amp Rolling (HybridDesign):\u003cbr\u003eThis is the ZP3's most distinctive featureIt uses a hybrid circuit that combines thewarm,smooth character of vacuum tubeswith the clarity and precision of solid-state operational amplifiers (op-amps).Crucially, it allows for \"rolling\" both the tubes and the op-amps. This means enthusiasts can easily swap these components to fine-tune the sound signature to their personal preference from lush and vintage to detailed and modern.\u003c\/p\u003e\n\u003cp\u003e2.High-Resolution Audio Support:The ZP3 is built to handle high-qualitydigital audio. lt features a built-in USBDAC (Digital-to-Analog Converter) thatsupports resolutions up to 32-bit\/384kHzand DSD256.This allows it to perfectlydecode high-resolution audio files from acomputer, providing a significant upgradeover standard computer sound cards\u003cbr\u003e3. Versatile Connectivity:\u003cbr\u003eIt offers a comprehensive set of inputsand outputs for a device of its size:\u003cbr\u003e.Inputs:USB-C (for digital audio from aPC),Optical, Coaxial, and two sets ofRCA analog inputs. Outputs: RCA line-out for connecting to a power amplifier, and a dedicated\u003cbr\u003e6.35mm(1\/4\")headphone output with its own volume contro, making it a capable headphone amplifier.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43723384488029,"sku":"Fosi-Audio-ZP3-Black-US","price":233.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43723384520797,"sku":"Fosi-Audio-ZP3-Black-EU","price":233.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43723384553565,"sku":"Fosi-Audio-ZP3-Black-UK","price":233.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43723384586333,"sku":"Fosi-Audio-ZP3-Black-AU","price":233.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_ZP3_Preamplifier-02.webp?v=1761035801"},{"product_id":"fosi-audio-gr70-tube-headphone-amp","title":"Fosi Audio GR70","description":"\u003cp\u003eFosi Audio GR70 is a Class-A tube headphone amplifier and RCA preamplifier for analog desktop and HiFi systems.\u003c\/p\u003e\u003cp\u003eA two-stage four-tube circuit, dual headphone outputs, selectable impedance modes and tone controls provide warm analog listening for headphones or downstream amplifiers.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003ePure tube amplification\u003c\/h3\u003e\u003cp\u003eTwo 5654W and two 6Ж4\/6Ж8 tubes form a two-stage analog amplification path.\u003c\/p\u003e\u003ch3\u003eHeadphone and preamp functions\u003c\/h3\u003e\u003cp\u003eUse 3.5mm or 6.35mm headphones, or connect the RCA output to powered speakers or a power amplifier.\u003c\/p\u003e\u003ch3\u003eSelectable impedance modes\u003c\/h3\u003e\u003cp\u003eLow and high settings support headphones from 16Ω to 300Ω.\u003c\/p\u003e\u003ch3\u003eDirect analog tone control\u003c\/h3\u003e\u003cp\u003eFront-panel bass, treble and volume adjustment simplify sound tuning without software.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAnalog headphone listening\u003c\/li\u003e\n\u003cli\u003eHigh-impedance and conventional full-size headphones\u003c\/li\u003e\n\u003cli\u003eAdding tube character before a power amplifier\u003c\/li\u003e\n\u003cli\u003ePowered speaker systems with RCA input\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUSB, optical, coaxial or Bluetooth sources without a separate DAC\u003c\/li\u003e\n\u003cli\u003eDirectly driving passive speakers\u003c\/li\u003e\n\u003cli\u003eBalanced headphone or XLR systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGR70 is an analog headphone amplifier\/preamp; digital sources require a DAC with RCA output.\u003c\/li\u003e\n\u003cli\u003eIts RCA output cannot power passive speakers directly; use powered speakers or a power amplifier.\u003c\/li\u003e\n\u003cli\u003eUse only officially confirmed compatible tubes and allow installed tubes to cool before handling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media(max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important}}.emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0\"\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_GR70_Tube_Headphone_Amp-03.webp?v=1761102474\" alt=\"Quad-Tube Dual-Stage Amplification\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_GR70_Tube_Headphone_Amp-17.webp?v=1761102553\" alt=\"Product Overview\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_GR70_Tube_Headphone_Amp-18.webp?v=1761102558\" alt=\"Product Connection and Usage Diagram\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eDoes GR70 include a DAC?\u003c\/h3\u003e\u003cp\u003eNo. It accepts analog RCA input.\u003c\/p\u003e\u003ch3\u003eCan it power passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. A separate power amplifier is required.\u003c\/p\u003e\u003ch3\u003eWhich headphones are supported?\u003c\/h3\u003e\u003cp\u003eThe official specification covers 16–300Ω using selectable low\/high impedance modes.\u003c\/p\u003e\u003ch3\u003eDoes it have balanced output?\u003c\/h3\u003e\u003cp\u003eNo. Headphone outputs are 3.5mm and 6.35mm, with RCA pre-output.\u003c\/p\u003e\u003ch3\u003eCan it be used as a preamplifier?\u003c\/h3\u003e\u003cp\u003eYes, through the rear RCA output.\u003c\/p\u003e\u003ch3\u003eWhich tubes are supplied?\u003c\/h3\u003e\u003cp\u003eThe official package lists two 5654 tubes and two 6Ж4\/6Ж8 tubes.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eAnalog headphone system\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: DAC \/ streamer with RCA output\u003cbr\u003eConnection: RCA line input\u003cbr\u003eOutput connection: 3.5mm or 6.35mm output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Wired headphones\u003c\/p\u003e\u003ch3\u003ePowered speaker system\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: Analog source \/ DAC\u003cbr\u003eConnection: RCA line input\u003cbr\u003eOutput connection: RCA pre-output\u003cbr\u003eTarget icon: speakers\u003cbr\u003eOutput: Powered speakers\u003c\/p\u003e\u003ch3\u003eSeparate power amplifier system\u003c\/h3\u003e\u003cp\u003eSource icon: streamer\u003cbr\u003eSource: Analog source \/ DAC\u003cbr\u003eConnection: RCA line input\u003cbr\u003eOutput connection: RCA pre-output\u003cbr\u003eTarget icon: amplifier\u003cbr\u003eOutput: Power amplifier driving passive speakers\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAnalog connections\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eInput\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003eRCA line input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eOutputs\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003eRCA pre-output; 3.5mm and 6.35mm headphone outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eAmplification\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003eClass-A tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eTube complement\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e2 × 5654W; 2 × 6Ж4\/6Ж8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eHeadphone and power\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eRated output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e90mW @ 32Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eMaximum output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e300mW @ 32Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eHeadphone impedance\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003eLow: 16–120Ω; High: 120–300Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eRCA output level\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e1.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eSNR\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e≥97dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003ePower input\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003eDC 12V \/ 3A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eComparison: Which Fosi Audio model is right for you?\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:680px\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eGR40\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eGR70\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eK7\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eProduct position\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eTube DAC \/ headphone amp \/ preamp\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eAnalog tube headphone amp \/ preamp\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBalanced digital DAC \/ headphone amp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDigital inputs\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eUSB, optical, coaxial, Bluetooth\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eNone\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eUSB, optical, coaxial, Bluetooth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHeadphone outputs\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e3.5mm and 6.35mm\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e3.5mm and 4.4mm balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eSpeaker-system output\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eRCA pre-out\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eRCA pre-out\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eRCA line output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBest use\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDigital sources with tube stage\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eAnalog tube headphone system\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHigh-output HiFi and gaming\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Silvery \/ US","offer_id":43725789069405,"sku":"Fosi-Audio-GR70-Silvery-US","price":181.7,"currency_code":"USD","in_stock":true},{"title":"Silvery \/ AU","offer_id":43725789233245,"sku":"Fosi-Audio-GR70-Silvery-AU","price":233.99,"currency_code":"USD","in_stock":true},{"title":"Silvery \/ EU","offer_id":43725789266013,"sku":"Fosi-Audio-GR70-Silvery-EU","price":233.99,"currency_code":"USD","in_stock":true},{"title":"Silvery \/ UK","offer_id":43725789298781,"sku":"Fosi-Audio-GR70-Silvery-UK","price":233.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_GR70.webp?v=1785223557"},{"product_id":"fosi-audio-sp601","title":"Fosi Audio SP601","description":"\n\u003cp\u003eFosi Audio SP601 is a pair of 6.5-inch passive bookshelf speakers designed for stereo music and home entertainment systems.\u003c\/p\u003e\u003cp\u003eA silk-dome tweeter, HybridCone composite woofer and 80W RMS power handling provide a balanced upgrade for compact HiFi installations.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003cp\u003eFour reasons this product deserves a place in a well-planned audio system.\u003c\/p\u003e\u003ch3\u003eTwo-Way Driver Design\u003c\/h3\u003e\u003cp\u003eA 1.5-inch silk-dome tweeter and 6.5-inch composite woofer divide high and low frequencies for clearer stereo reproduction.\u003c\/p\u003e\u003ch3\u003e80W RMS Power Handling\u003c\/h3\u003e\u003cp\u003eThe pair is rated for 80W RMS and 160W peak power, supporting capable integrated amplifiers without requiring oversized cabinets.\u003c\/p\u003e\u003ch3\u003eFlexible Speaker Placement\u003c\/h3\u003e\u003cp\u003eFront-facing drivers and tuned bass-reflex construction suit stands, shelves and media-room layouts.\u003c\/p\u003e\u003ch3\u003eStandard Passive Integration\u003c\/h3\u003e\u003cp\u003eDual-mode binding posts support common speaker-cable terminations and make the SP601 easy to integrate with a stereo amplifier.\u003c\/p\u003e\n\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCompact stereo music systems\u003c\/li\u003e\n\u003cli\u003eBookshelf or speaker-stand installations\u003c\/li\u003e\n\u003cli\u003eTV and home entertainment systems with an external amplifier\u003c\/li\u003e\n\u003cli\u003eListeners upgrading from small entry-level passive speakers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUsers who need powered speakers with built-in amplification\u003c\/li\u003e\n\u003cli\u003eWireless-only systems without a speaker amplifier\u003c\/li\u003e\n\u003cli\u003eVery large rooms requiring high-output floorstanding speakers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"emiuzek-product-content-images\" style=\"width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_SP601-14.webp?v=1761112303\" alt=\"Fosi Audio SP601 silk-dome tweeter technical feature\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_SP601-17.webp?v=1761112325\" alt=\"Fosi Audio SP601 rear binding posts and speaker connections\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_SP601-18.webp?v=1761112330\" alt=\"Fosi Audio SP601 passive bookshelf speakers in a home audio system\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSP601 is a passive speaker pair and must be connected to a compatible stereo amplifier.\u003c\/li\u003e\n\u003cli\u003eMatch the amplifier and listening level to the speakers' 4Ω nominal impedance and 80W RMS rating.\u003c\/li\u003e\n\u003cli\u003eSpeaker cable is required between the amplifier and each speaker.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eDo the SP601 speakers include an amplifier?\u003c\/h3\u003e\u003cp\u003eNo. They are passive speakers and require an external power or integrated amplifier.\u003c\/p\u003e\u003ch3\u003eWhat amplifier impedance support is required?\u003c\/h3\u003e\u003cp\u003eUse an amplifier rated to operate safely with 4Ω speakers.\u003c\/p\u003e\u003ch3\u003eCan they connect directly to a television?\u003c\/h3\u003e\u003cp\u003eOnly if the television feeds a compatible external amplifier; the speakers cannot accept a TV signal directly.\u003c\/p\u003e\u003ch3\u003eCan I use banana plugs?\u003c\/h3\u003e\u003cp\u003eThe dual-mode binding posts are designed for common speaker-cable terminations, including compatible banana plugs.\u003c\/p\u003e\u003ch3\u003eAre they sold as a pair?\u003c\/h3\u003e\u003cp\u003eYes, the SP601 is supplied as a stereo speaker pair.\u003c\/p\u003e\u003ch3\u003eDo they support Bluetooth or Wi-Fi?\u003c\/h3\u003e\u003cp\u003eNot by themselves. Add a Bluetooth receiver or network streamer through the amplifier if wireless playback is required.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eStereo HiFi system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e DAC, streamer or CD player\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e RCA \/ digital connection to amplifier\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker cable\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Stereo amplifier → SP601 pair\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Observe left\/right speaker polarity.\u003c\/p\u003e\u003ch3\u003eTV audio system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Television\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e HDMI ARC \/ optical to compatible amplifier\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker cable\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Amplifier → SP601 pair\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The amplifier must decode the TV audio signal.\u003c\/p\u003e\u003ch3\u003eDesktop system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Computer \/ USB DAC\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Line-level audio to amplifier\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Speaker cable\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Compact amplifier → SP601 pair\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Place both speakers at similar height and distance.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eSpeaker\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTwo-way passive bookshelf speaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTweeter\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e1.5-inch silk dome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eWoofer\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e6.5-inch HybridCone composite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNominal Impedance\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSensitivity\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e86dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003ePower\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eRMS Power Handling\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e80W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePeak Power Handling\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e160W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAmplification\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eExternal amplifier required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eConnections\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSpeaker Terminals\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDual-mode binding posts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eWireless Connectivity\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSetup\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eStereo music\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSource → amplifier → SP601 pair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTV system\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTV → AV\/stereo amplifier → SP601 pair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDesktop HiFi\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eComputer\/DAC → compact amplifier → SP601 pair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003cp\u003eNo like-for-like comparison is included because this model has a distinct product role.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"White \/ US","offer_id":43726291402845,"sku":"Fosi-Audio-SP601-White-US","price":326.99,"currency_code":"USD","in_stock":true},{"title":"White \/ EU","offer_id":43726291435613,"sku":"Fosi-Audio-SP601-White-EU","price":467.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ US","offer_id":43726291468381,"sku":"Fosi-Audio-SP601-Black-US","price":467.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43726291501149,"sku":"Fosi-Audio-SP601-Black-EU","price":467.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_SP601_8ec26d3d-36fb-4b37-b678-bba5b8523b0c.webp?v=1785381612"},{"product_id":"fosi-audio-zh3","title":"Fosi Audio ZH3","description":"\u003cp\u003eFosi Audio ZH3 is an all-in-one desktop DAC, balanced headphone amplifier and preamplifier for headphones, active speakers and external amplifiers.\u003c\/p\u003e\u003cp\u003eIts AK4493SEQ DAC, powerful 4.4mm balanced output, multiple digital\/analog inputs and XLR\/RCA pre-outs create a complete desktop HiFi control center.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003cp\u003eFour reasons this product deserves a place in a well-planned audio system.\u003c\/p\u003e\u003ch3\u003eAll-in-One Desktop Hub\u003c\/h3\u003e\u003cp\u003eDAC, headphone amplification and preamp functions reduce the need for several separate components.\u003c\/p\u003e\u003ch3\u003e2570mW Balanced Headphone Output\u003c\/h3\u003e\u003cp\u003eThe 4.4mm output provides substantial power at 32Ω, while three gain levels support a broad range of headphones.\u003c\/p\u003e\u003ch3\u003eHigh-Resolution AKM Platform\u003c\/h3\u003e\u003cp\u003eXMOS XU316 and AK4493SEQ support PCM 32-bit\/768kHz and DSD512 playback.\u003c\/p\u003e\u003ch3\u003eFlexible System Control\u003c\/h3\u003e\u003cp\u003eRCA\/XLR line outputs, remote control, tone adjustment, six filters and swappable op-amps support system customization.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDesktop headphone systems\u003c\/li\u003e\n\u003cli\u003eBalanced 4.4mm headphone listening\u003c\/li\u003e\n\u003cli\u003eActive studio monitors and powered speakers\u003c\/li\u003e\n\u003cli\u003eExternal power amplifiers requiring preamp control\u003c\/li\u003e\n\u003cli\u003eComputer and game-console USB audio\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUsers needing built-in passive-speaker amplification\u003c\/li\u003e\n\u003cli\u003eWireless Bluetooth-only systems\u003c\/li\u003e\n\u003cli\u003eTV systems requiring HDMI ARC\u003c\/li\u003e\n\u003cli\u003ePortable or battery-powered listening\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_ZH3-05.webp\" alt=\"Fosi Audio ZH3 XMOS and AKM flagship DAC performance banner\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_ZH3-09.webp\" alt=\"Fosi Audio ZH3 fully balanced headphone amplifier circuit banner\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_ZH3-16.webp\" alt=\"Fosi Audio ZH3 desktop HiFi control and remote operation banner\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eZH3 can drive headphones and control active speakers or a power amplifier, but it cannot directly drive passive speakers.\u003c\/li\u003e\n\u003cli\u003eIts USB input supports UAC 1.0 and 2.0 modes; choose the compatible mode for computers or game consoles.\u003c\/li\u003e\n\u003cli\u003eRCA is an analog input, while RCA and XLR line outputs are intended for downstream active speakers or amplifiers.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eCan the ZH3 drive passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. Use its line outputs with a separate power amplifier, or connect active speakers.\u003c\/p\u003e\u003ch3\u003eWhich headphone outputs are included?\u003c\/h3\u003e\u003cp\u003eIt provides 4.4mm balanced and 6.35mm single-ended headphone outputs.\u003c\/p\u003e\u003ch3\u003eDoes it support Bluetooth?\u003c\/h3\u003e\u003cp\u003eNo Bluetooth input is specified. Use USB, optical, coaxial or analog RCA input.\u003c\/p\u003e\u003ch3\u003eCan I connect a game console?\u003c\/h3\u003e\u003cp\u003eYes. UAC 1.0\/2.0 switching supports compatible game-console USB audio configurations.\u003c\/p\u003e\u003ch3\u003eCan it connect to active speakers?\u003c\/h3\u003e\u003cp\u003eYes. Use RCA or balanced XLR line output and control volume through the ZH3 preamp.\u003c\/p\u003e\u003ch3\u003eCan it accept an analog source?\u003c\/h3\u003e\u003cp\u003eYes, through RCA analog input.\u003c\/p\u003e\u003ch3\u003eWhat headphones can it support?\u003c\/h3\u003e\u003cp\u003eThe three-level gain system is specified for approximately 16–300Ω headphones; start with low gain and low volume.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eComputer headphone system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e PC \/ Mac\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e 4.4mm or 6.35mm\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Choose UAC mode and gain appropriate for the source and headphones.\u003c\/p\u003e\u003ch3\u003eActive speaker system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Computer \/ digital transport \/ analog source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB, optical, coaxial or RCA\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e XLR or RCA line output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Active speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use preamp volume control and begin at a low level.\u003c\/p\u003e\u003ch3\u003eExternal amplifier system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Digital or analog source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB, optical, coaxial or RCA\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e XLR or RCA line output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Power amplifier → passive speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e ZH3 supplies the DAC and preamp stages only.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eCore Architecture\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDAC \/ balanced headphone amplifier \/ preamplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDAC\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAKM AK4493SEQ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eUSB Interface\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eXMOS XU316\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eHeadphone Amplifiers\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eOPA1612 x4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eMaximum Resolution\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePCM 32-bit\/768kHz; DSD512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eInputs and Outputs\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eUSB, optical, coaxial, RCA analog\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eHeadphone Outputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e4.4mm balanced; 6.35mm single-ended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eLine Outputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBalanced XLR; RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eUSB Modes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eUAC 1.0 \/ UAC 2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTrigger\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e12V trigger connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eHeadphone Performance\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e4.4mm Output at 32Ω\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e2570mW x2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e6.35mm Output at 32Ω\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e640mW x2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eGain\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eThree levels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eHeadphone Impedance Range\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e16–300Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eAudio Performance\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSINAD\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≥115dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSNR\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≥121dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTHD+N\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≤0.00018%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNoise Floor\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e≤1.9μV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSound Adjustment\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBass\/treble EQ; six filters; bypass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDC 12V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eSetup\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eHeadphones\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eComputer → USB → ZH3 → 4.4mm\/6.35mm headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eActive speakers\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSource → ZH3 → XLR\/RCA active speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePassive speakers\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eSource → ZH3 → power amplifier → passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;min-width:680px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eZH3\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eZD3\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222;\"\u003eGR40\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eProduct Position\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDAC \/ headphone amp \/ preamp\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBalanced DAC \/ preamp\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTube DAC \/ headphone amp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eDAC Chip\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAK4493SEQ\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eES9039Q2M\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eUSB Maximum\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePCM 768kHz \/ DSD512\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003ePCM 768kHz \/ DSD512\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eLower-tier desktop decoding\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eHDMI ARC\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBluetooth\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eAnalog RCA Input\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eHeadphone Outputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e4.4mm, 6.35mm\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNone\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBalanced XLR Output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eHeadphone Power at 32Ω\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e2570mW x2 balanced\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eNot applicable\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003e250mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eBest Use\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eComplete headphone\/desktop hub\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eTV and amplifier DAC hub\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top;\"\u003eCompact tube headphone system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43732574732381,"sku":"Fosi-Audio-ZH3-Black-US","price":233.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43732574797917,"sku":"Fosi-Audio-ZH3-Black-EU","price":233.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43732574830685,"sku":"Fosi-Audio-ZH3-Black-UK","price":233.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43732574863453,"sku":"Fosi-Audio-ZH3-Black-AU","price":233.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_ZH3_f46c2138-c55b-4b4c-a3af-c0256a32fe60.webp?v=1785382373"},{"product_id":"fosi-audio-ds3","title":"Fosi Audio DS3","description":"\u003cp\u003eFosi Audio DS3 is a portable USB DAC and headphone amplifier designed for music, gaming and multichannel spatial-audio playback.\u003c\/p\u003e\u003cp\u003eHardware 7.1 processing, PCM 768kHz\/DSD512 decoding and a 220mW output combine immersive gaming modes with high-resolution wired headphone listening.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eHardware-level 7.1 spatial audio\u003c\/h3\u003e\u003cp\u003eProcesses compatible multichannel game audio into an expansive headphone presentation without PC software.\u003c\/p\u003e\u003ch3\u003eDedicated gaming sound modes\u003c\/h3\u003e\u003cp\u003eSwitch between standard, FPS and 7.1 spatial effects in UAC 1.0 mode.\u003c\/p\u003e\u003ch3\u003eHigh-resolution music playback\u003c\/h3\u003e\u003cp\u003eSupports PCM up to 32-bit\/768kHz and native DSD512.\u003c\/p\u003e\u003ch3\u003eCompact high-output design\u003c\/h3\u003e\u003cp\u003eProvides up to 220mW at 32Ω while weighing only 16g.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePC and console gaming with wired headphones\u003c\/li\u003e\n\u003cli\u003ePortable high-resolution music playback\u003c\/li\u003e\n\u003cli\u003eUsers wanting selectable spatial-audio effects\u003c\/li\u003e\n\u003cli\u003e16–300Ω wired headphones\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBluetooth or wireless playback\u003c\/li\u003e\n\u003cli\u003eHeadsets requiring microphone passthrough\u003c\/li\u003e\n\u003cli\u003eUsers wanting speaker amplification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e7.1 spatial processing depends on the source game or device providing compatible multichannel audio.\u003c\/li\u003e\n\u003cli\u003eGaming effects are selected in UAC 1.0 mode; music filters are handled in UAC 2.0 mode.\u003c\/li\u003e\n\u003cli\u003eDS3 has no built-in battery and draws power from the connected source.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media(max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important}}.emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0\"\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioDS3_1.webp?v=1764208837\" alt=\"Fosi Audio DS3 Portable DAC Amp\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioDS3_2.webp?v=1764208837\" alt=\"Next-GenXMOS Powered Processor\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioDS3_3.webp?v=1764208837\" alt=\"Virtual7.1 \u0026amp; FPS Sound Effects\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eDoes DS3 require a driver?\u003c\/h3\u003e\u003cp\u003eNo PC software or driver is required for its core operation.\u003c\/p\u003e\u003ch3\u003eHow is 7.1 mode selected?\u003c\/h3\u003e\u003cp\u003eIn UAC 1.0 mode, hold both volume buttons to cycle through the available sound effects.\u003c\/p\u003e\u003ch3\u003eCan it play ordinary stereo music?\u003c\/h3\u003e\u003cp\u003eYes. Spatial effects are optional and standard stereo playback is supported.\u003c\/p\u003e\u003ch3\u003eWhat is the maximum output power?\u003c\/h3\u003e\u003cp\u003eThe official specification lists 220mW at 32Ω.\u003c\/p\u003e\u003ch3\u003eDoes it support DSD?\u003c\/h3\u003e\u003cp\u003eYes, up to native DSD512.\u003c\/p\u003e\u003ch3\u003eCan gain be changed?\u003c\/h3\u003e\u003cp\u003eYes. Press both volume buttons together to switch between low and high gain.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003ePC gaming\u003c\/h3\u003e\u003cp\u003eSource icon: computer\u003cbr\u003eSource: Gaming PC\u003cbr\u003eConnection: USB audio \/ compatible multichannel output\u003cbr\u003eOutput connection: Headphone output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Wired gaming headphones\u003c\/p\u003e\u003ch3\u003eConsole gaming\u003c\/h3\u003e\u003cp\u003eSource icon: device\u003cbr\u003eSource: Compatible console\u003cbr\u003eConnection: USB audio in UAC 1.0 mode\u003cbr\u003eOutput connection: Headphone output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Wired headphones\u003c\/p\u003e\u003ch3\u003ePortable music\u003c\/h3\u003e\u003cp\u003eSource icon: phone\u003cbr\u003eSource: USB-C phone \/ tablet\u003cbr\u003eConnection: USB-C audio\u003cbr\u003eOutput connection: Headphone output\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: Wired headphones or IEMs\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAudio and processing\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eProduct type\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003ePortable USB DAC and headphone amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eMaximum PCM\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e32-bit \/ 768kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eDSD\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003eNative DSD512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eSpatial processing\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003eHardware 7.1; FPS effect; standard mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eOutput and physical\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eMaximum output\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e220mW @ 32Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eRecommended impedance\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e16–300Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eDimensions\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e55 × 20 × 11mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left;vertical-align:top\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd;vertical-align:top\"\u003e16g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eComparison: Which Fosi Audio model is right for you?\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:680px\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDS1\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDS2 2024\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDS3\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePrimary use\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePortable Hi-Res music\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePortable Hi-Res music\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMusic and gaming spatial audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDAC \/ processing\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eESS ES9038Q2M\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDual CS43131\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHardware 7.1 processing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMaximum PCM\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e32-bit \/ 768kHz\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e32-bit \/ 384kHz\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e32-bit \/ 768kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMaximum DSD\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDSD512\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDSD256\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDSD512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eMaximum stated output\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e220mW @ 32Ω balanced\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e510mW @ 32Ω balanced (manual)\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e220mW @ 32Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBest use\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eCompact ESS dongle\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eHigher-power balanced portable setup\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eGaming effects and spatial audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Obsidian","offer_id":43831590977629,"sku":"Fosi-Audio-DS3-Obsidian","price":80.69,"currency_code":"USD","in_stock":true},{"title":"Galaxy","offer_id":43831591010397,"sku":"Fosi-Audio-DS3-Galaxy","price":119.0,"currency_code":"USD","in_stock":true},{"title":"DS3+IM4 -0bsidian","offer_id":43831591043165,"sku":"Fosi-Audio-DS3-DS3-IM4-0bsidian","price":161.71,"currency_code":"USD","in_stock":true},{"title":"DS3+IM4-Galaxy","offer_id":43831591075933,"sku":"Fosi-Audio-DS3-DS3-IM4-Galaxy","price":239.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_DS3.webp?v=1785222651"},{"product_id":"fosi-audio-im4","title":"Fosi Audio IM4","description":"\u003cp\u003eFosi Audio IM4 is an open-back wired in-ear monitor built around a 10mm dual-magnet dynamic driver.\u003c\/p\u003e\u003cp\u003eIts lightweight CNC-aluminum shells, replaceable nozzles and multiple ear-tip tunings combine a spacious presentation with adjustable comfort and sound.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eOpen-back acoustic design\u003c\/h3\u003e\u003cp\u003eReduces enclosed-ear pressure and creates a more spacious presentation than a sealed IEM.\u003c\/p\u003e\u003ch3\u003e10mm dual-magnet driver\u003c\/h3\u003e\u003cp\u003eAn N52 dual-magnet, dual-chamber dynamic driver delivers the full frequency range.\u003c\/p\u003e\u003ch3\u003eTunable fit and sound\u003c\/h3\u003e\u003cp\u003eTwo nozzle materials and three ear-tip styles allow practical adjustment.\u003c\/p\u003e\u003ch3\u003eLightweight detachable construction\u003c\/h3\u003e\u003cp\u003eEach aluminum earpiece weighs about 7g and uses a replaceable 0.78mm 2-pin cable.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHome and office wired listening\u003c\/li\u003e\n\u003cli\u003eListeners who prefer an open, spacious IEM\u003c\/li\u003e\n\u003cli\u003eLong listening sessions\u003c\/li\u003e\n\u003cli\u003eUsers wanting replaceable cables and tuning accessories\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMaximum passive noise isolation\u003c\/li\u003e\n\u003cli\u003eWireless Bluetooth listening without an adapter\u003c\/li\u003e\n\u003cli\u003eVery quiet public environments where sound leakage matters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIM4 is open-back, so it isolates less and can leak more sound than a sealed IEM.\u003c\/li\u003e\n\u003cli\u003eThe standard package uses a 3.5mm cable; balanced cables and DS3 bundles depend on the selected variant.\u003c\/li\u003e\n\u003cli\u003eChoose ear tips for both seal and comfort, then compare nozzles at a safe volume.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003e@media (min-width:650px){.pbg__notes .emiuzek-product-content-images{width:calc(148.148% + 50px)!important;margin-left:calc(-48.148% - 50px)!important}}@media(max-width:649px){.pbg__notes .emiuzek-product-content-images{width:100%!important;margin-left:0!important}}.emiuzek-product-content-images img{display:block;width:100%;height:auto}\u003c\/style\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"margin:32px 0\"\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioIM4-003.webp?v=1764216548\" alt=\"Open-Back Design\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioIM4-002.webp?v=1764214918\" alt=\"Dual-Magnet Dual-Cavity Driver\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin:24px auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioIM4-005.webp?v=1764214918\" alt=\"Ergonomic Build for Comfort\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eIs IM4 open-back?\u003c\/h3\u003e\u003cp\u003eYes. It is designed for a more open presentation with reduced isolation.\u003c\/p\u003e\u003ch3\u003eDoes it include Bluetooth?\u003c\/h3\u003e\u003cp\u003eNo. It is a passive wired IEM.\u003c\/p\u003e\u003ch3\u003eCan the cable be replaced?\u003c\/h3\u003e\u003cp\u003eYes, it uses a 0.78mm 2-pin detachable connection.\u003c\/p\u003e\u003ch3\u003eIs a 4.4mm cable included?\u003c\/h3\u003e\u003cp\u003eOnly with the relevant option or bundle; check the selected variant.\u003c\/p\u003e\u003ch3\u003eCan it be used with a phone?\u003c\/h3\u003e\u003cp\u003eYes, when the phone has a compatible output or USB DAC adapter.\u003c\/p\u003e\u003ch3\u003eDoes the DS3 always come in the box?\u003c\/h3\u003e\u003cp\u003eNo. DS3 is included only in specifically named combo variants.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003ePhone listening\u003c\/h3\u003e\u003cp\u003eSource icon: phone\u003cbr\u003eSource: Phone \/ tablet\u003cbr\u003eConnection: 3.5mm output or compatible USB DAC\u003cbr\u003eOutput connection: 0.78mm 2-pin cable\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: IM4 earphones\u003c\/p\u003e\u003ch3\u003ePortable DAC system\u003c\/h3\u003e\u003cp\u003eSource icon: phone\u003cbr\u003eSource: USB-C phone \/ player\u003cbr\u003eConnection: USB DAC to 3.5mm or optional 4.4mm cable\u003cbr\u003eOutput connection: Detachable cable\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: IM4 earphones\u003c\/p\u003e\u003ch3\u003eDesktop listening\u003c\/h3\u003e\u003cp\u003eSource icon: computer\u003cbr\u003eSource: PC \/ desktop DAC\u003cbr\u003eConnection: 3.5mm or compatible balanced headphone output\u003cbr\u003eOutput connection: Detachable cable\u003cbr\u003eTarget icon: headphones\u003cbr\u003eOutput: IM4 earphones\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAcoustic design\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eDriver\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e10mm N52 dual-magnet dual-cavity dynamic driver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eDiaphragm\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003ePU beryllium-coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eDesign\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003eOpen-back in-ear monitor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eImpedance\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e21Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSensitivity\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e109dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eFrequency response\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e20Hz–20kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eConstruction and cable\u003c\/h3\u003e\u003cdiv style=\"width:100%;overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"width:42%;padding:11px;border:1px solid #ddd;text-align:left\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eShell\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e6063 CNC aluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eConnector\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e0.78mm 2-pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eStandard plug\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e3.5mm gold-plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eCable\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e4-core 392-strand 5N OFC silver-plated copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:11px;border:1px solid #ddd;text-align:left\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"padding:11px;border:1px solid #ddd\"\u003e7g ±0.5g per earpiece; 38g ±1g with cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eComparison: Which Fosi Audio model is right for you?\u003c\/h3\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:680px\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eIM4\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDS3 + IM4 combo\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eIM4 accessory option\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eProduct\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eOpen-back wired IEM\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eIM4 with DS3 portable DAC\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eCable or DAC accessory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eStandard connection\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eUSB-C source through DS3\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDepends on selected accessory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eBest use\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eDirect wired listening\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003ePortable DAC and gaming system\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eUpgrading cable or phone connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eImportant note\u003c\/th\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eStandard package only\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eOnly named combo variants include DS3\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #ddd;text-align:left\"\u003eAccessory is not a complete IM4 package\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Obsidian","offer_id":43831742038109,"sku":"Fosi-Audio-IM4-Obsidian","price":87.59,"currency_code":"USD","in_stock":true},{"title":"Galaxy","offer_id":43831742005341,"sku":"Fosi-Audio-IM4-Galaxy","price":119.0,"currency_code":"USD","in_stock":true},{"title":"DS3+IM4-Galaxy","offer_id":43831742070877,"sku":"Fosi-Audio-IM4-DS3-IM4-Galaxy","price":163.78,"currency_code":"USD","in_stock":true},{"title":"DS3+IM4 -0bsidian","offer_id":43831742103645,"sku":"Fosi-Audio-IM4-DS3-IM4-0bsidian","price":239.0,"currency_code":"USD","in_stock":true},{"title":"IM4 4.4mm Audio Cable","offer_id":43831742136413,"sku":"Fosi-Audio-IM4-IM4-4-4mm-Audio-Cable","price":39.0,"currency_code":"USD","in_stock":true},{"title":"IM4 3.5mm Audio Cable","offer_id":43831742169181,"sku":"Fosi-Audio-IM4-IM4-3-5mm-Audio-Cable","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioIM4-003.webp?v=1764216548"},{"product_id":"fosi-audio-sw10","title":"Fosi Audio SW10 Active Subwoofer - 10-Inch, 200W Deep Bass for Home Theater","description":"\u003ch1\u003e\u003cb\u003eFosi Audio SW10 Active Subwoofer: Feel the Deep Bass\u003c\/b\u003e\u003c\/h1\u003e\n\u003cp data-path-to-node=\"11\"\u003eThe Fosi Audio SW10 is a high-performance active subwoofer designed to bring dynamic, powerful, and accurate low-frequency effects to your home audio setup. Whether you are building an immersive home theater system or enhancing your music listening experience, the SW10 delivers the impactful bass you need.\u003c\/p\u003e\n\u003ch2\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/h2\u003e\n\u003cul data-path-to-node=\"13\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,0,0\"\u003e\u003cb\u003ePowerful Performance:\u003c\/b\u003e Equipped with a built-in 200-watt (RMS) Class D amplifier, the SW10 provides clean, continuous power to drive the 10-inch cone, ensuring earth-shaking yet controlled bass.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,1,0\"\u003e\u003cb\u003e10-Inch High-Excursion Driver:\u003c\/b\u003e The down-firing, long-throw 10-inch woofer is designed for maximum excursion, allowing it to move a large volume of air for deep, resonating bass down to the lowest frequencies.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,2,0\"\u003e\u003cb\u003eAdjustable Crossover and Phase Control:\u003c\/b\u003e Tailor the subwoofer's output to seamlessly blend with your main speakers. The continuously variable low-pass crossover allows you to set the upper frequency limit, while the phase switch (0 or 180 degrees) ensures optimal sound wave alignment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,3,0\"\u003e\u003cb\u003eVersatile Connectivity:\u003c\/b\u003e The SW10 offers flexible connection options, including RCA line-level inputs (L\/R\/LFE), making it compatible with a wide range of audio receivers and amplifiers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,4,0\"\u003e\u003cb\u003eSolid, Low-Resonance Cabinet:\u003c\/b\u003e Constructed from high-density materials, the cabinet minimizes unwanted internal vibrations and resonances, ensuring that you hear only pure, distortion-free bass.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cb\u003eTechnical Specifications (Highlights)\u003c\/b\u003e\u003c\/h2\u003e\n\u003cul data-path-to-node=\"15\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,0,0\"\u003e\u003cb\u003eWoofer Size:\u003c\/b\u003e 10 inches\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,1,0\"\u003e\u003cb\u003eAmplifier Power (RMS):\u003c\/b\u003e 200W\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,2,0\"\u003e\u003cb\u003eAmplifier Type:\u003c\/b\u003e Class D\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,3,0\"\u003e\u003cb\u003eFrequency Response:\u003c\/b\u003e Optimized for deep bass extension\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,4,0\"\u003e\u003cb\u003eControls:\u003c\/b\u003e Volume, Crossover (Variable Low-Pass Filter), Phase Switch\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"16\"\u003eUpgrade your sound system with the Fosi Audio SW10 and redefine your perception of low-end audio quality.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"White \/ US","offer_id":43838889033821,"sku":"Fosi-Audio-SW10-Active-Subwoofer-White-US","price":359.0,"currency_code":"USD","in_stock":true},{"title":"White \/ EU","offer_id":43838889066589,"sku":"Fosi-Audio-SW10-Active-Subwoofer-White-EU","price":359.0,"currency_code":"USD","in_stock":true},{"title":"White \/ UK","offer_id":43838889099357,"sku":"Fosi-Audio-SW10-Active-Subwoofer-White-UK","price":359.0,"currency_code":"USD","in_stock":true},{"title":"White \/ AU","offer_id":43838889132125,"sku":"Fosi-Audio-SW10-Active-Subwoofer-White-AU","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioSW10-001.webp?v=1764313970"},{"product_id":"fosi-audio-p4","title":"Fosi Audio P4","description":"\u003cp\u003eFosi Audio P4 is a compact solid-state stereo preamplifier that brings three RCA sources under one volume and tone-control stage.\u003c\/p\u003e\u003cp\u003eIts motorized analog volume control, remote operation, three-level gain, tone bypass and separate pre-out make it a practical partner for power amplifiers and powered subwoofers.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eThree-source analog hub\u003c\/h3\u003e\u003cp\u003eThree RCA inputs allow convenient switching among a DAC, streamer, CD player or other line-level source.\u003c\/p\u003e\u003ch3\u003eMotorized analog volume control\u003c\/h3\u003e\u003cp\u003eThe remote-driven analog potentiometer provides smooth level adjustment without replacing the analog signal path with digital volume control.\u003c\/p\u003e\u003ch3\u003eFlexible tone and gain adjustment\u003c\/h3\u003e\u003cp\u003eBass, treble, bypass and three gain levels help match different source levels and listening preferences.\u003c\/p\u003e\u003ch3\u003eLow-noise preamplifier performance\u003c\/h3\u003e\u003cp\u003eHigh SNR and low THD+N support clean system control in a compact all-metal chassis.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSystems with multiple line-level analog sources\u003c\/li\u003e\n\u003cli\u003ePower amplifiers needing source selection and remote volume\u003c\/li\u003e\n\u003cli\u003ePowered speaker systems\u003c\/li\u003e\n\u003cli\u003e2.1 systems using the volume-controlled pre-out\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDriving passive speakers directly\u003c\/li\u003e\n\u003cli\u003eTurntables without a built-in or external phono preamp\u003c\/li\u003e\n\u003cli\u003eUsers needing Bluetooth or digital audio inputs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/P4-006.webp?v=1764566905\" alt=\"Fosi Audio P4 stereo preamplifier low-noise audio performance\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/P4-002.webp?v=1764566905\" alt=\"Fosi Audio P4 three RCA inputs, RCA output and pre-out connections\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/P4-007.webp?v=1764566905\" alt=\"Fosi Audio P4 power amplifier, powered speaker and subwoofer setup scenarios\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eP4 is a preamplifier and cannot directly power passive speakers.\u003c\/li\u003e\n\u003cli\u003eAll three inputs are line-level RCA; a standard turntable requires a phono preamp.\u003c\/li\u003e\n\u003cli\u003ePre-out is volume controlled and suitable for compatible powered subwoofers or powered speakers.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan P4 drive passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. Connect its RCA output to a power amplifier that drives the passive speakers.\u003c\/p\u003e\u003ch3\u003eDoes P4 include Bluetooth?\u003c\/h3\u003e\u003cp\u003eNo. It is an analog RCA preamplifier.\u003c\/p\u003e\u003ch3\u003eCan I connect a turntable?\u003c\/h3\u003e\u003cp\u003eOnly if the turntable has a built-in phono stage or you use an external phono preamp.\u003c\/p\u003e\u003ch3\u003eWhat is pre-out for?\u003c\/h3\u003e\u003cp\u003eIt provides a volume-controlled line-level output for compatible powered speakers, a powered subwoofer or downstream equipment.\u003c\/p\u003e\u003ch3\u003eCan tone controls be bypassed?\u003c\/h3\u003e\u003cp\u003eYes. The bypass function provides a more direct signal path when tone adjustment is not needed.\u003c\/p\u003e\u003ch3\u003eWhat does the gain setting do?\u003c\/h3\u003e\u003cp\u003eThe three gain levels help match differing source output levels and system sensitivity.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003ePower amplifier system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e DAC, streamer, CD player or phono preamp\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e RCA input\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e RCA output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Power amplifier → passive speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Select the source and use P4 for volume control.\u003c\/p\u003e\u003ch3\u003ePowered speaker system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Up to three line-level sources\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e RCA input\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Pre-out or RCA output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Powered speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Begin with conservative volume settings on both devices.\u003c\/p\u003e\u003ch3\u003e2.1 system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Line-level source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e RCA input\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e RCA output + pre-out\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Power amplifier and powered subwoofer\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use pre-out for the powered subwoofer and confirm crossover settings.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eAudio performance\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003e2.0-channel solid-state preamplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSNR\u003c\/td\u003e\n\u003ctd\u003e≥110dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic range\u003c\/td\u003e\n\u003ctd\u003e≥110dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD+N\u003c\/td\u003e\n\u003ctd\u003e≤0.003%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrosstalk\u003c\/td\u003e\n\u003ctd\u003e≥105dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise floor\u003c\/td\u003e\n\u003ctd\u003e≤9μV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e20Hz–20kHz (±0.1dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTone adjustment\u003c\/td\u003e\n\u003ctd\u003e±12dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eConnectivity and power\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eRCA × 3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003eRCA, pre-out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGain adjustment\u003c\/td\u003e\n\u003ctd\u003e+3dB \/ +6dB \/ +9dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume control\u003c\/td\u003e\n\u003ctd\u003eMotorized analog potentiometer with remote\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply\u003c\/td\u003e\n\u003ctd\u003eDC 12V \/ 1.5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSetup\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStereo separates\u003c\/td\u003e\n\u003ctd\u003eSources → P4 → Power amplifier → Passive speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowered speakers\u003c\/td\u003e\n\u003ctd\u003eSources → P4 → Powered speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.1 separates\u003c\/td\u003e\n\u003ctd\u003eSources → P4 → Power amplifier + powered subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch3\u003eFosi Audio product comparison\u003c\/h3\u003e\u003cp\u003eCompare the main Fosi Audio preamplifier choices by source support, outputs and the features that most affect system design.\u003c\/p\u003e\u003cdiv style=\"max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"min-width:760px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"min-width:150px;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eP4\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eP3\u003c\/th\u003e\n\u003cth style=\"min-width:190px;\"\u003eZP3\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct position\u003c\/th\u003e\n\u003ctd\u003eCompact analog preamp\u003c\/td\u003e\n\u003ctd\u003eTube preamp + headphone amp\u003c\/td\u003e\n\u003ctd\u003eBalanced high-performance preamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAnalog inputs\u003c\/th\u003e\n\u003ctd\u003eRCA × 3\u003c\/td\u003e\n\u003ctd\u003eRCA\u003c\/td\u003e\n\u003ctd\u003eRCA × 2, XLR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWireless \/ digital inputs\u003c\/th\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eBluetooth 5.1\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMain outputs\u003c\/th\u003e\n\u003ctd\u003eRCA, pre-out\u003c\/td\u003e\n\u003ctd\u003eRCA, AUX\u003c\/td\u003e\n\u003ctd\u003eRCA, XLR, sub-out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeadphone output\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpeaker amplification\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTube stage\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes, replaceable 5654W\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTone controls\u003c\/th\u003e\n\u003ctd\u003eBass and treble with bypass\u003c\/td\u003e\n\u003ctd\u003eBass and treble\u003c\/td\u003e\n\u003ctd\u003eBass and treble\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRemote control\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTHD+N\u003c\/th\u003e\n\u003ctd\u003e≤0.003%\u003c\/td\u003e\n\u003ctd\u003e≤0.02%\u003c\/td\u003e\n\u003ctd\u003e≤0.0007%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSNR\u003c\/th\u003e\n\u003ctd\u003e≥110dB\u003c\/td\u003e\n\u003ctd\u003e≥103dB\u003c\/td\u003e\n\u003ctd\u003e≥115dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBest use\u003c\/th\u003e\n\u003ctd\u003eThree analog sources and powered sub expansion\u003c\/td\u003e\n\u003ctd\u003eBluetooth tube preamp and headphones\u003c\/td\u003e\n\u003ctd\u003eBalanced stereo system integration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Fosi Audio","offers":[{"title":"Black \/ US","offer_id":43853159497821,"sku":"Fosi-Audio-P4-Black-US","price":119.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ EU","offer_id":43853159530589,"sku":"Fosi-Audio-P4-Black-EU","price":119.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ UK","offer_id":43853159563357,"sku":"Fosi-Audio-P4-Black-UK","price":119.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ AU","offer_id":43853159596125,"sku":"Fosi-Audio-P4-Black-AU","price":119.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_P4_a3a48823-1baa-40ec-a11d-cd40802f54e5.webp?v=1785379555"},{"product_id":"fosi-audio-music-rhythm-visualizer-light","title":"Fosi Audio Music Rhythm Visualizer Light","description":"\u003cp\u003eFosi Audio Music Rhythm Visualizer Light is a USB-C powered ambient LED display that reacts to nearby music through its built-in microphone.\u003c\/p\u003e\u003cp\u003eIts 32 RGB LEDs, adjustable effects and compact aluminum housing add synchronized visual movement to a desktop, gaming or HiFi setup without entering the audio signal path.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eReal-time music response\u003c\/h3\u003e\u003cp\u003eA built-in microphone converts nearby rhythm and level changes into synchronized LED movement.\u003c\/p\u003e\u003ch3\u003e32 RGB LED display\u003c\/h3\u003e\u003cp\u003eMultiple colors and dynamic effects create a more expressive visual response than a static ambient light.\u003c\/p\u003e\u003ch3\u003eAdjustable presentation\u003c\/h3\u003e\u003cp\u003eOn-device controls allow quick changes to mode, color and sensitivity.\u003c\/p\u003e\u003ch3\u003eSimple USB-C power\u003c\/h3\u003e\u003cp\u003eThe compact aluminum light can be powered from a suitable USB source without connecting to audio equipment.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDesktop HiFi systems\u003c\/li\u003e\n\u003cli\u003eGaming and computer setups\u003c\/li\u003e\n\u003cli\u003eListening-room ambient lighting\u003c\/li\u003e\n\u003cli\u003eUsers wanting sound-reactive visuals without changing the audio chain\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUsers needing an audio spectrum measurement instrument\u003c\/li\u003e\n\u003cli\u003eOutdoor or wet-location lighting\u003c\/li\u003e\n\u003cli\u003eUsers expecting the light to transmit or process audio\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"emiuzek-product-content-images\" style=\"width:100%;max-width:1100px;margin:8px auto 32px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioLight-004.webp?v=1764572643\" alt=\"Fosi Audio Music Rhythm Visualizer Light adjustable RGB effects and sensitivity\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioLight-007.webp?v=1764572643\" alt=\"Fosi Audio Music Rhythm Visualizer Light USB-C power and control interface\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioLight-006.webp?v=1764572643\" alt=\"Fosi Audio Music Rhythm Visualizer Light desktop and HiFi ambient lighting scenario\" loading=\"lazy\" style=\"display:block;width:100%;max-width:1100px;height:auto;margin:0 auto 24px;\"\u003e\n\u003c\/div\u003e\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThe visualizer reacts through a microphone and does not need an audio input cable.\u003c\/li\u003e\n\u003cli\u003eUSB-C supplies power only; the light is not a DAC, amplifier or music source.\u003c\/li\u003e\n\u003cli\u003ePerformance depends on room volume, distance and sensitivity setting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eDoes it connect to the audio output?\u003c\/h3\u003e\u003cp\u003eNo. It listens through its built-in microphone and does not enter the audio signal path.\u003c\/p\u003e\u003ch3\u003eWhat does USB-C do?\u003c\/h3\u003e\u003cp\u003eUSB-C supplies power to the visualizer.\u003c\/p\u003e\u003ch3\u003eCan I adjust the lighting?\u003c\/h3\u003e\u003cp\u003eYes. Use the controls to change the mode, color and sensitivity.\u003c\/p\u003e\u003ch3\u003eWill it work with speakers and headphones?\u003c\/h3\u003e\u003cp\u003eIt responds best to audible room sound. Headphone-only playback may not provide enough sound for the microphone.\u003c\/p\u003e\u003ch3\u003eDoes it improve sound quality?\u003c\/h3\u003e\u003cp\u003eNo. It is a visual accessory and does not process audio.\u003c\/p\u003e\u003ch3\u003eIs it a professional spectrum analyzer?\u003c\/h3\u003e\u003cp\u003eNo. It is an entertainment light designed for responsive visual effects.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eDesktop audio setup\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Computer or streamer playing through speakers\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB-C power; sound detected by microphone\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e RGB light display\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Visualizer placed near the speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Adjust sensitivity to suit the listening level.\u003c\/p\u003e\u003ch3\u003eHiFi listening room\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Amplifier and speaker system\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB-C power; ambient sound detection\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e RGB light display\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Visualizer on a shelf or equipment rack\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Keep the microphone unobstructed.\u003c\/p\u003e\u003ch3\u003eGaming setup\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e PC or console with speakers\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB-C power; ambient sound detection\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e RGB light display\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Visualizer near the display or speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Choose a lower sensitivity if effects remain constantly active.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ch3\u003eCore specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eSound-reactive ambient LED visualizer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED array\u003c\/td\u003e\n\u003ctd\u003e32 RGB LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSound detection\u003c\/td\u003e\n\u003ctd\u003eBuilt-in microphone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessing\u003c\/td\u003e\n\u003ctd\u003e32-bit ARM processor with automatic gain control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing\u003c\/td\u003e\n\u003ctd\u003eAluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eControls and power\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower input\u003c\/td\u003e\n\u003ctd\u003eUSB-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustments\u003c\/td\u003e\n\u003ctd\u003eDisplay mode, color, speed and sensitivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio connection\u003c\/td\u003e\n\u003ctd\u003eNot required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eRecommended System Setup\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSetup\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesktop system\u003c\/td\u003e\n\u003ctd\u003eUSB power → Visualizer placed near speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGaming system\u003c\/td\u003e\n\u003ctd\u003eUSB power → Visualizer beside display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHiFi system\u003c\/td\u003e\n\u003ctd\u003eUSB power → Visualizer on equipment rack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":43854068285533,"sku":"Fosi-Audio-Music-Rhythm-Visualizer-Light-Black","price":59.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_Music_Rhythm_Visualizer_Light.webp?v=1784631762"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/collections\/fosiaudio_eedf1ff2-d31e-44eb-bfa1-de0f68ed1c73.webp?v=1785553140","url":"https:\/\/emiuzek.com\/pt-br\/collections\/fosi.oembed","provider":"EMiUZEK","version":"1.0","type":"link"}