{"title":"Questyle","description":"\u003ch1 data-path-to-node=\"11\"\u003e\u003cb\u003eQuestyle: Mastering Purity through Current Mode Amplification (CMA)\u003c\/b\u003e\u003c\/h1\u003e\n\u003cp data-path-to-node=\"12\"\u003eQuestyle is a leading high-end audio manufacturer dedicated to pushing the boundaries of amplification technology. Our brand is globally recognized for our patented \u003cb\u003eCurrent Mode Amplification (CMA)\u003c\/b\u003e technology, which forms the foundation of all our core products. This unique approach delivers ultra-low distortion, wide bandwidth, and an incredibly fast transient response, resulting in a sound quality marked by stunning clarity, detail, and dynamic accuracy.\u003c\/p\u003e\n\u003ch2 data-path-to-node=\"13\"\u003e\u003cb\u003e⚡ Core Technology: Current Mode Amplification (CMA)\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp data-path-to-node=\"14\"\u003eThe patented CMA architecture distinguishes Questyle from traditional voltage-based amplifiers, providing key sonic advantages:\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\u003eUltra-Low Distortion:\u003c\/b\u003e CMA dramatically reduces transient intermodulation distortion (TIMD) and noise, leading to an exceptionally black background and pristine audio detail.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,1,0\"\u003e\u003cb\u003eWide Bandwidth:\u003c\/b\u003e The high-speed nature of the current domain ensures the reproduction of ultra-high frequencies and subtle harmonics, providing a true-to-life listening experience.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,2,0\"\u003e\u003cb\u003eFast Transient Response:\u003c\/b\u003e CMA allows music signals to be processed at speeds up to 10 times faster than conventional amplifiers, ensuring dynamic impact and precise timing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-path-to-node=\"16\"\u003e\u003cb\u003e🎧 Flagship Product Lines\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp data-path-to-node=\"17\"\u003eQuestyle offers a comprehensive range of components built for the most demanding audiophiles, spanning both portable and desktop environments.\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\u003eDigital Audio Players (DAPs):\u003c\/b\u003e Our portable players integrate CMA modules with high-resolution DACs (often AKM or ESS) and streaming capabilities, delivering a reference-grade sound source on the go.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"18,1,0\"\u003e\u003cb\u003eDesktop Headphone Amplifiers \u0026amp; DACs:\u003c\/b\u003e These units serve as the centerpiece of a high-end desktop system, combining powerful CMA amplification with advanced digital processing, often including balanced XLR outputs and multiple digital inputs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"18,2,0\"\u003e\u003cb\u003ePortable DAC\/Amps:\u003c\/b\u003e Compact devices that bring the power and clarity of CMA technology to mobile listening, elevating the performance of smartphones and laptops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-path-to-node=\"19\"\u003e\u003cb\u003e🔗 Professional Connectivity and Design\u003c\/b\u003e\u003c\/h2\u003e\n\u003cul data-path-to-node=\"20\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"20,0,0\"\u003e\u003cb\u003eTrue Balanced Output:\u003c\/b\u003e Questyle emphasizes fully \u003cb\u003eBalanced\u003c\/b\u003e topologies in its high-end designs, utilizing 4 groups of CMA circuits to maximize power and further minimize noise for the purest signal transmission.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"20,1,0\"\u003e\u003cb\u003ePremium Build Quality:\u003c\/b\u003e All products feature aerospace-grade aluminum chassis and precision machining, reflecting the high standards of internal engineering.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"21\"\u003eQuestyle represents the pinnacle of audio amplification science, offering audiophiles an opportunity to hear their music with unparalleled realism and emotional depth.\u003c\/p\u003e","products":[{"product_id":"questyle-m12i","title":"Questyle M12i","description":"\u003cp\u003eQuestyle M12i is a compact USB DAC and headphone amplifier designed to upgrade wired listening from phones, tablets and computers.\u003c\/p\u003e\n\u003cp\u003eQuestyle Current Mode amplification, high-resolution decoding and 3.5mm single-ended provide a focused portable HiFi solution without an internal battery.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\n\u003cp\u003eFour core reasons to choose this Questyle model.\u003c\/p\u003e\n\u003ch3\u003eCurrent Mode Amplification\u003c\/h3\u003e\n\u003cp\u003eQuestyle's patented amplification architecture is designed for wide bandwidth, fast transient response and low distortion.\u003c\/p\u003e\n\u003ch3\u003eHigh-Resolution USB Decoding\u003c\/h3\u003e\n\u003cp\u003eESS ES9281AC supports high-resolution playback from compatible USB sources.\u003c\/p\u003e\n\u003ch3\u003ePractical Headphone Connectivity\u003c\/h3\u003e\n\u003cp\u003e3.5mm single-ended cover the intended wired headphone and IEM connections.\u003c\/p\u003e\n\u003ch3\u003ePortable, Bus-Powered Design\u003c\/h3\u003e\n\u003cp\u003eThe compact unit draws power from the connected source and requires no separate charging routine.\u003c\/p\u003e\n\u003ch2\u003eBest for\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePortable wired headphone listening\u003c\/li\u003e\n\u003cli\u003eUSB-C phone and tablet audio\u003c\/li\u003e\n\u003cli\u003eLaptop and desktop headphone systems\u003c\/li\u003e\n\u003cli\u003eHigh-resolution local or streaming playback\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWireless Bluetooth headphone users\u003c\/li\u003e\n\u003cli\u003eUsers needing speaker power amplification\u003c\/li\u003e\n\u003cli\u003eHeadsets requiring microphone pass-through\u003c\/li\u003e\n\u003cli\u003eListeners needing an internal battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_M12i__020.webp\" alt=\"Questyle M12i portable listening scenario\" loading=\"lazy\" style=\"display: block; width: 100%; max-width: 1100px; height: auto; margin: 0 auto 24px;\"\u003e\u003c\/p\u003e\n\u003cdiv class=\"emiuzek-product-content-images\" style=\"width: 100%; max-width: 1100px; margin: 8px auto 32px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_M12i__010.webp\" alt=\"Questyle M12i audio performance and internal technology\" loading=\"lazy\" style=\"display: block; width: 100%; max-width: 1100px; height: auto; margin: 0 auto 24px;\"\u003e\u003c\/div\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eQuestyle M12i is a USB DAC\/headphone amplifier, not a music player or speaker amplifier.\u003c\/li\u003e\n\u003cli\u003eUSB cable compatibility depends on the source device; iPhone connection requirements vary by connector generation.\u003c\/li\u003e\n\u003cli\u003eStart with low gain and low volume when using sensitive IEMs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eCan it drive passive speakers?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed for wired headphones and IEMs.\u003c\/p\u003e\n\u003ch3\u003eDoes it support Bluetooth?\u003c\/h3\u003e\n\u003cp\u003eNo. Audio input is through USB.\u003c\/p\u003e\n\u003ch3\u003eDoes it need charging?\u003c\/h3\u003e\n\u003cp\u003eNo internal battery is used; it is powered by the connected source.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with an iPhone?\u003c\/h3\u003e\n\u003cp\u003eYes with the appropriate compatible cable; MFi support applies where specified for the model.\u003c\/p\u003e\n\u003ch3\u003eDoes it support headset microphones?\u003c\/h3\u003e\n\u003cp\u003eThe headphone outputs are for audio playback and do not provide microphone pass-through.\u003c\/p\u003e\n\u003ch3\u003eCan it work with a computer?\u003c\/h3\u003e\n\u003cp\u003eYes, through a compatible USB connection and operating-system audio output selection.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\n\u003ch3\u003eUSB-C phone\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Phone \/ tablet\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB-C\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired IEMs or headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Select the Questyle device as audio output if needed.\u003c\/p\u003e\n\u003ch3\u003eComputer audio\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e PC \/ Mac\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB\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 Use a compatible data cable, not a charge-only cable.\u003c\/p\u003e\n\u003ch3\u003ePortable streamer\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e USB-capable digital player\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired IEMs\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Begin playback at low volume.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\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;\"\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;\"\u003ePortable USB DAC \/ headphone amplifier\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 ES9281AC\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;\"\u003eQuestyle Current Mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eUSB Input\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eUSB Type-C\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;\"\u003e3.5mm 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;\"\u003ePower\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eUSB bus powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eMaximum PCM\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e32-bit\/384kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eDSD\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eDSD256\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eApple Certification\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eMFi\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;\"\u003eMobile\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003ePhone → USB → M12i → wired headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eComputer\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003ePC\/Mac → USB → M12i → headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003ePortable player\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eUSB digital player → M12i → IEMs\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;\"\u003eM12i\u003c\/th\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eM15i\u003c\/th\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eM15C\u003c\/th\u003e\n\u003cth style=\"text-align: left; padding: 12px; border-bottom: 2px solid #222;\"\u003eM18i\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;\"\u003ePosition\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eCompact single-ended\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003ePremium dual-output\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eUSB-C dual-output\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eFlagship mobile\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;\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e3.5mm + 4.4mm\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e3.5mm + 4.4mm\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003e3.5mm + 4.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eGain Control\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eAutomatic\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eHigh \/ low\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eHigh \/ low\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eModel controls\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 portable setup\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003ePremium iOS\/USB listening\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eUSB-C ecosystem\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd; vertical-align: top;\"\u003eFlagship portable system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Questyle","offers":[{"title":"Black","offer_id":43721294643293,"sku":"Questyle-M12i-Black","price":65.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle-m12i.webp?v=1785397099"},{"product_id":"questyle-m15i","title":"Questyle M15i","description":"\u003cp\u003eQuestyle M15i is a compact USB DAC and headphone amplifier designed to upgrade wired listening from phones, tablets and computers.\u003c\/p\u003e\u003cp\u003eQuestyle Current Mode amplification, high-resolution decoding and 3.5mm single-ended and 4.4mm balanced provide a focused portable HiFi solution without an internal battery.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003cp\u003eFour core reasons to choose this Questyle model.\u003c\/p\u003e\u003ch3\u003eCurrent Mode Amplification\u003c\/h3\u003e\u003cp\u003eQuestyle's patented amplification architecture is designed for wide bandwidth, fast transient response and low distortion.\u003c\/p\u003e\u003ch3\u003eHigh-Resolution USB Decoding\u003c\/h3\u003e\u003cp\u003eESS ES9281AC supports high-resolution playback from compatible USB sources.\u003c\/p\u003e\u003ch3\u003ePractical Headphone Connectivity\u003c\/h3\u003e\u003cp\u003e3.5mm single-ended and 4.4mm balanced cover the intended wired headphone and IEM connections.\u003c\/p\u003e\u003ch3\u003ePortable, Bus-Powered Design\u003c\/h3\u003e\u003cp\u003eThe compact unit draws power from the connected source and requires no separate charging routine.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePortable wired headphone listening\u003c\/li\u003e\n\u003cli\u003eUSB-C phone and tablet audio\u003c\/li\u003e\n\u003cli\u003eLaptop and desktop headphone systems\u003c\/li\u003e\n\u003cli\u003eHigh-resolution local or streaming playback\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWireless Bluetooth headphone users\u003c\/li\u003e\n\u003cli\u003eUsers needing speaker power amplification\u003c\/li\u003e\n\u003cli\u003eHeadsets requiring microphone pass-through\u003c\/li\u003e\n\u003cli\u003eListeners needing an internal battery\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\/Questyle_M15i_003.webp\" alt=\"Questyle M15i audio performance and internal technology\" 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\/Questyle_M15i_006.webp\" alt=\"Questyle M15i controls 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\/Questyle_M15i_018.webp\" alt=\"Questyle M15i portable listening 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\u003eQuestyle M15i is a USB DAC\/headphone amplifier, not a music player or speaker amplifier.\u003c\/li\u003e\n\u003cli\u003eUSB cable compatibility depends on the source device; iPhone connection requirements vary by connector generation.\u003c\/li\u003e\n\u003cli\u003eStart with low gain and low volume when using sensitive IEMs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eCan it drive passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. It is designed for wired headphones and IEMs.\u003c\/p\u003e\u003ch3\u003eDoes it support Bluetooth?\u003c\/h3\u003e\u003cp\u003eNo. Audio input is through USB.\u003c\/p\u003e\u003ch3\u003eDoes it need charging?\u003c\/h3\u003e\u003cp\u003eNo internal battery is used; it is powered by the connected source.\u003c\/p\u003e\u003ch3\u003eCan I use it with an iPhone?\u003c\/h3\u003e\u003cp\u003eYes with the appropriate compatible cable; MFi support applies where specified for the model.\u003c\/p\u003e\u003ch3\u003eDoes it support headset microphones?\u003c\/h3\u003e\u003cp\u003eThe headphone outputs are for audio playback and do not provide microphone pass-through.\u003c\/p\u003e\u003ch3\u003eCan it work with a computer?\u003c\/h3\u003e\u003cp\u003eYes, through a compatible USB connection and operating-system audio output selection.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eUSB-C phone\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Phone \/ tablet\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB-C\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired IEMs or headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Select the Questyle device as audio output if needed.\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 Headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use a compatible data cable, not a charge-only cable.\u003c\/p\u003e\u003ch3\u003ePortable streamer\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e USB-capable digital player\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired IEMs\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Begin playback at low volume.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\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\"\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\"\u003ePortable USB DAC \/ headphone amplifier\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 ES9281AC\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\"\u003eQuestyle Current Mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB Input\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB Type-C\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\"\u003e3.5mm single-ended and 4.4mm balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePower\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB bus powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eMaximum PCM\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003e32-bit\/384kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eDSD\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eDSD256\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\"\u003eHigh \/ low\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eApple Certification\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eMFi\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\"\u003eMobile\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePhone → USB → M15i → wired headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eComputer\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePC\/Mac → USB → M15i → headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePortable player\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB digital player → M15i → IEMs\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\"\u003eM12i\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222\"\u003eM15i\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222\"\u003eM15C\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222\"\u003eM18i\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\"\u003ePosition\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eCompact single-ended\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePremium dual-output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB-C dual-output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eFlagship mobile\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\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003e3.5mm + 4.4mm\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003e3.5mm + 4.4mm\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003e3.5mm + 4.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eGain Control\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eAutomatic\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eHigh \/ low\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eHigh \/ low\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eModel controls\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 portable setup\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePremium iOS\/USB listening\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB-C ecosystem\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eFlagship portable system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Questyle","offers":[{"title":"Default Title","offer_id":43636623343709,"sku":"Questyle-M15i","price":198.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle-m15i.webp?v=1785397099"},{"product_id":"questyle-m15c","title":"Questyle M15C","description":"\u003cp\u003eQuestyle M15C is a compact USB DAC and headphone amplifier designed to upgrade wired listening from phones, tablets and computers.\u003c\/p\u003e\u003cp\u003eQuestyle Current Mode amplification, high-resolution decoding and 3.5mm single-ended and 4.4mm balanced provide a focused portable HiFi solution without an internal battery.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003cp\u003eFour core reasons to choose this Questyle model.\u003c\/p\u003e\u003ch3\u003eCurrent Mode Amplification\u003c\/h3\u003e\u003cp\u003eQuestyle's patented amplification architecture is designed for wide bandwidth, fast transient response and low distortion.\u003c\/p\u003e\u003ch3\u003eHigh-Resolution USB Decoding\u003c\/h3\u003e\u003cp\u003eESS ES9281AC supports high-resolution playback from compatible USB sources.\u003c\/p\u003e\u003ch3\u003ePractical Headphone Connectivity\u003c\/h3\u003e\u003cp\u003e3.5mm single-ended and 4.4mm balanced cover the intended wired headphone and IEM connections.\u003c\/p\u003e\u003ch3\u003ePortable, Bus-Powered Design\u003c\/h3\u003e\u003cp\u003eThe compact unit draws power from the connected source and requires no separate charging routine.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePortable wired headphone listening\u003c\/li\u003e\n\u003cli\u003eUSB-C phone and tablet audio\u003c\/li\u003e\n\u003cli\u003eLaptop and desktop headphone systems\u003c\/li\u003e\n\u003cli\u003eHigh-resolution local or streaming playback\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWireless Bluetooth headphone users\u003c\/li\u003e\n\u003cli\u003eUsers needing speaker power amplification\u003c\/li\u003e\n\u003cli\u003eHeadsets requiring microphone pass-through\u003c\/li\u003e\n\u003cli\u003eListeners needing an internal battery\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\/Questyle_M15C_3.webp\" alt=\"Questyle M15C audio performance and internal technology\" 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\/Questyle_M15C_6.webp\" alt=\"Questyle M15C controls 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\/Questyle_M15C_12.webp\" alt=\"Questyle M15C portable listening 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\u003eQuestyle M15C is a USB DAC\/headphone amplifier, not a music player or speaker amplifier.\u003c\/li\u003e\n\u003cli\u003eUSB cable compatibility depends on the source device; iPhone connection requirements vary by connector generation.\u003c\/li\u003e\n\u003cli\u003eStart with low gain and low volume when using sensitive IEMs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eCan it drive passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. It is designed for wired headphones and IEMs.\u003c\/p\u003e\u003ch3\u003eDoes it support Bluetooth?\u003c\/h3\u003e\u003cp\u003eNo. Audio input is through USB.\u003c\/p\u003e\u003ch3\u003eDoes it need charging?\u003c\/h3\u003e\u003cp\u003eNo internal battery is used; it is powered by the connected source.\u003c\/p\u003e\u003ch3\u003eCan I use it with an iPhone?\u003c\/h3\u003e\u003cp\u003eYes with the appropriate compatible cable; MFi support applies where specified for the model.\u003c\/p\u003e\u003ch3\u003eDoes it support headset microphones?\u003c\/h3\u003e\u003cp\u003eThe headphone outputs are for audio playback and do not provide microphone pass-through.\u003c\/p\u003e\u003ch3\u003eCan it work with a computer?\u003c\/h3\u003e\u003cp\u003eYes, through a compatible USB connection and operating-system audio output selection.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eUSB-C phone\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Phone \/ tablet\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB-C\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired IEMs or headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Select the Questyle device as audio output if needed.\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 Headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use a compatible data cable, not a charge-only cable.\u003c\/p\u003e\u003ch3\u003ePortable streamer\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e USB-capable digital player\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired IEMs\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Begin playback at low volume.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\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\"\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\"\u003ePortable USB DAC \/ headphone amplifier\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 ES9281AC\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\"\u003eQuestyle Current Mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB Input\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB Type-C\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\"\u003e3.5mm single-ended and 4.4mm balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePower\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB bus powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eMaximum PCM\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003e32-bit\/384kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eDSD\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eDSD256\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\"\u003eHigh \/ low\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\"\u003eMobile\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePhone → USB → M15C → wired headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eComputer\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePC\/Mac → USB → M15C → headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePortable player\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB digital player → M15C → IEMs\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\"\u003eM12i\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222\"\u003eM15i\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222\"\u003eM15C\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222\"\u003eM18i\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\"\u003ePosition\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eCompact single-ended\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePremium dual-output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB-C dual-output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eFlagship mobile\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\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003e3.5mm + 4.4mm\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003e3.5mm + 4.4mm\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003e3.5mm + 4.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eGain Control\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eAutomatic\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eHigh \/ low\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eHigh \/ low\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eModel controls\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 portable setup\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePremium iOS\/USB listening\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB-C ecosystem\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eFlagship portable system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Questyle","offers":[{"title":"Black","offer_id":43721338323037,"sku":"Questyle-M15C-Black","price":81.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle-m15C.webp?v=1785397100"},{"product_id":"questyle-m18i","title":"Questyle M18i","description":"\u003cp\u003eQuestyle M18i is a compact USB DAC and headphone amplifier designed to upgrade wired listening from phones, tablets and computers.\u003c\/p\u003e\u003cp\u003eQuestyle Current Mode amplification, high-resolution decoding and 3.5mm single-ended and 4.4mm balanced provide a focused portable HiFi solution without an internal battery.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003cp\u003eFour core reasons to choose this Questyle model.\u003c\/p\u003e\u003ch3\u003eCurrent Mode Amplification\u003c\/h3\u003e\u003cp\u003eQuestyle's patented amplification architecture is designed for wide bandwidth, fast transient response and low distortion.\u003c\/p\u003e\u003ch3\u003eHigh-Resolution USB Decoding\u003c\/h3\u003e\u003cp\u003eQuestyle flagship decoding platform supports high-resolution playback from compatible USB sources.\u003c\/p\u003e\u003ch3\u003ePractical Headphone Connectivity\u003c\/h3\u003e\u003cp\u003e3.5mm single-ended and 4.4mm balanced cover the intended wired headphone and IEM connections.\u003c\/p\u003e\u003ch3\u003ePortable, Bus-Powered Design\u003c\/h3\u003e\u003cp\u003eThe compact unit draws power from the connected source and requires no separate charging routine.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePortable wired headphone listening\u003c\/li\u003e\n\u003cli\u003eUSB-C phone and tablet audio\u003c\/li\u003e\n\u003cli\u003eLaptop and desktop headphone systems\u003c\/li\u003e\n\u003cli\u003eHigh-resolution local or streaming playback\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWireless Bluetooth headphone users\u003c\/li\u003e\n\u003cli\u003eUsers needing speaker power amplification\u003c\/li\u003e\n\u003cli\u003eHeadsets requiring microphone pass-through\u003c\/li\u003e\n\u003cli\u003eListeners needing an internal battery\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\/Questyle_M18i_004.webp\" alt=\"Questyle M18i audio performance and internal technology\" 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\/Questyle_M18i_009.webp\" alt=\"Questyle M18i controls 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\/Questyle_M18i_017.webp\" alt=\"Questyle M18i portable listening 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\u003eQuestyle M18i is a USB DAC\/headphone amplifier, not a music player or speaker amplifier.\u003c\/li\u003e\n\u003cli\u003eUSB cable compatibility depends on the source device; iPhone connection requirements vary by connector generation.\u003c\/li\u003e\n\u003cli\u003eStart with low gain and low volume when using sensitive IEMs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eCan it drive passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. It is designed for wired headphones and IEMs.\u003c\/p\u003e\u003ch3\u003eDoes it support Bluetooth?\u003c\/h3\u003e\u003cp\u003eNo. Audio input is through USB.\u003c\/p\u003e\u003ch3\u003eDoes it need charging?\u003c\/h3\u003e\u003cp\u003eNo internal battery is used; it is powered by the connected source.\u003c\/p\u003e\u003ch3\u003eCan I use it with an iPhone?\u003c\/h3\u003e\u003cp\u003eYes with the appropriate compatible cable; MFi support applies where specified for the model.\u003c\/p\u003e\u003ch3\u003eDoes it support headset microphones?\u003c\/h3\u003e\u003cp\u003eThe headphone outputs are for audio playback and do not provide microphone pass-through.\u003c\/p\u003e\u003ch3\u003eCan it work with a computer?\u003c\/h3\u003e\u003cp\u003eYes, through a compatible USB connection and operating-system audio output selection.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eUSB-C phone\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Phone \/ tablet\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB-C\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired IEMs or headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Select the Questyle device as audio output if needed.\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 Headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use a compatible data cable, not a charge-only cable.\u003c\/p\u003e\u003ch3\u003ePortable streamer\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e USB-capable digital player\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Headphone output\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired IEMs\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Begin playback at low volume.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\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\"\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\"\u003ePortable USB DAC \/ headphone amplifier\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\"\u003eQuestyle flagship decoding platform\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\"\u003eQuestyle Current Mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB Input\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB Type-C\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\"\u003e3.5mm single-ended and 4.4mm balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePower\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB bus powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eMaximum PCM\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUp to 32-bit\/768kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eDSD\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUp to DSD512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eAdditional Function\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eHD-call support with compatible devices\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\"\u003eMobile\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePhone → USB → M18i → wired headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eComputer\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePC\/Mac → USB → M18i → headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePortable player\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB digital player → M18i → IEMs\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\"\u003eM12i\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222\"\u003eM15i\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222\"\u003eM15C\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222\"\u003eM18i\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\"\u003ePosition\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eCompact single-ended\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePremium dual-output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB-C dual-output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eFlagship mobile\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\"\u003e3.5mm\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003e3.5mm + 4.4mm\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003e3.5mm + 4.4mm\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003e3.5mm + 4.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eGain Control\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eAutomatic\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eHigh \/ low\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eHigh \/ low\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eModel controls\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 portable setup\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePremium iOS\/USB listening\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eUSB-C ecosystem\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eFlagship portable system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Questyle","offers":[{"title":"Default Title","offer_id":43640485019741,"sku":"Questyle-M18i","price":367.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle-m18i.webp?v=1785397099"},{"product_id":"questyle-cma-fifteen","title":"Questyle CMA Fifteen","description":"\u003cp\u003eQuestyle CMA Fifteen is a reference desktop DAC, headphone amplifier and preamplifier for headphones, active monitors and power amplifiers.\u003c\/p\u003e\u003cp\u003eIts ES9038PRO DAC, Current Mode amplification, balanced headphone outputs and extensive digital\/analog connectivity form a complete desktop audio hub.\u003c\/p\u003e\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003cp\u003eFour core reasons to choose this Questyle model.\u003c\/p\u003e\u003ch3\u003eES9038PRO Reference DAC\u003c\/h3\u003e\u003cp\u003eThe eight-channel flagship DAC supports PCM up to 32-bit\/768kHz and native DSD512.\u003c\/p\u003e\u003ch3\u003eCurrent Mode Headphone Amplification\u003c\/h3\u003e\u003cp\u003eFour Current Mode amplifier engines provide balanced and single-ended headphone drive.\u003c\/p\u003e\u003ch3\u003eDAC, Headphone Amp and Preamp\u003c\/h3\u003e\u003cp\u003eOne chassis can control headphones, active speakers or an external power amplifier.\u003c\/p\u003e\u003ch3\u003eComprehensive Source Support\u003c\/h3\u003e\u003cp\u003eUSB, optical, coaxial, Bluetooth and analog inputs support mixed desktop systems.\u003c\/p\u003e\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReference desktop headphone systems\u003c\/li\u003e\n\u003cli\u003eActive monitor control\u003c\/li\u003e\n\u003cli\u003eBalanced power-amplifier systems\u003c\/li\u003e\n\u003cli\u003eMulti-source digital audio desks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePortable or battery-powered use\u003c\/li\u003e\n\u003cli\u003ePassive speakers without a power amplifier\u003c\/li\u003e\n\u003cli\u003eUsers needing HDMI ARC\u003c\/li\u003e\n\u003cli\u003eMinimal single-source systems\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\/Questyle_CMA_Fifteen_003.webp\" alt=\"Questyle CMA Fifteen audio performance and internal technology\" 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\/Questyle_CMA_Fifteen_006.webp\" alt=\"Questyle CMA Fifteen controls 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\/Questyle_CMA_Fifteen_009.webp\" alt=\"Questyle CMA Fifteen portable listening 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\u003eCMA Fifteen does not directly power passive speakers; use a downstream power amplifier.\u003c\/li\u003e\n\u003cli\u003eSet fixed or variable output correctly before connecting active speakers or a power amplifier.\u003c\/li\u003e\n\u003cli\u003eUse low gain and low volume first with sensitive headphones.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eCan it power passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. Use its pre-out with a separate power amplifier.\u003c\/p\u003e\u003ch3\u003eCan it drive balanced headphones?\u003c\/h3\u003e\u003cp\u003eYes, through 4.4mm and 4-pin XLR balanced outputs.\u003c\/p\u003e\u003ch3\u003eDoes it support Bluetooth input?\u003c\/h3\u003e\u003cp\u003eYes, including supported high-resolution Bluetooth codecs such as LDAC.\u003c\/p\u003e\u003ch3\u003eCan it connect to active speakers?\u003c\/h3\u003e\u003cp\u003eYes through XLR or RCA preamp outputs.\u003c\/p\u003e\u003ch3\u003eDoes it support analog input?\u003c\/h3\u003e\u003cp\u003eYes, RCA analog input is provided.\u003c\/p\u003e\u003ch3\u003eCan it decode DSD512?\u003c\/h3\u003e\u003cp\u003eYes over a compatible USB source and playback configuration.\u003c\/p\u003e\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eDesktop headphones\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 \/ 4-pin XLR \/ 6.35mm\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Wired headphones\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Select appropriate gain.\u003c\/p\u003e\u003ch3\u003eActive monitors\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Digital or analog source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e USB \/ optical \/ coaxial \/ Bluetooth \/ RCA\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e XLR or RCA pre-out\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Active speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Use variable preamp output.\u003c\/p\u003e\u003ch3\u003ePower amplifier system\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSource:\u003c\/strong\u003e Digital source\u003cbr\u003e\u003cstrong\u003eConnection:\u003c\/strong\u003e Supported digital input\u003cbr\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e XLR or RCA pre-out\u003cbr\u003e\u003cstrong\u003eTarget:\u003c\/strong\u003e Power amplifier → passive speakers\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Confirm volume control before playback.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\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\"\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\"\u003eDesktop DAC \/ 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\"\u003eESS ES9038PRO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eMaximum PCM\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003e32-bit\/768kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eDSD\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eNative DSD512\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; 4-pin XLR balanced; 6.35mm\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\"\u003eXLR and RCA\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\"\u003eUSB, optical, coaxial, Bluetooth, 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\"\u003eAmplification\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eFour Questyle Current Mode amplifier engines\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 → CMA Fifteen → 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 monitors\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eSource → CMA Fifteen → 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 → CMA Fifteen → 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\"\u003eCMA Fifteen\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222\"\u003eCMA18 Master\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border-bottom:2px solid #222\"\u003eM18i\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\"\u003ePosition\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eDesktop DAC\/amp\/preamp\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eFlagship desktop DAC\/amp\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePortable flagship\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\"\u003eES9038PRO\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eFlagship desktop architecture\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eMobile architecture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eBalanced Headphone\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003e4.4mm + 4-pin XLR\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\"\u003e4.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePreamp Output\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\"\u003eXLR + RCA\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePortable line function\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\"\u003eReference desktop hub\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003eTop desktop system\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border-bottom:1px solid #ddd;vertical-align:top\"\u003ePortable listening\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Questyle","offers":[{"title":"Default Title","offer_id":43640508285021,"sku":"Questyle-CMA-Fifteen","price":1622.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/QuestyleCMAFifteen_011.webp?v=1766046682"},{"product_id":"questyle-cma18","title":"Questyle CMA18 Master Hi-Res DAC\/AMP","description":"\u003cp\u003eQuestyle CMA Eighteen Master is a flagship desktop DAC, preamplifier and headphone amplifier designed as the control centre of a reference headphone or HiFi system.\u003c\/p\u003e\u003cp\u003eIts fully balanced Current Mode architecture, extensive digital and analogue connectivity, and powerful balanced headphone stage combine source control and high-end listening in one chassis.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eFlagship desktop integration\u003c\/h3\u003e\u003cp\u003eCombines digital decoding, analogue preamplification and headphone amplification in one reference-class component.\u003c\/p\u003e\u003ch3\u003eFull-chain Current Mode design\u003c\/h3\u003e\u003cp\u003eQuestyle’s Current Mode signal path is engineered for wide bandwidth, low distortion and precise transient response.\u003c\/p\u003e\u003ch3\u003eBalanced system architecture\u003c\/h3\u003e\u003cp\u003eBalanced headphone and line connections support demanding headphones and high-quality downstream systems.\u003c\/p\u003e\u003ch3\u003eFlexible source control\u003c\/h3\u003e\u003cp\u003eMultiple digital and analogue inputs make it suitable for computers, transports and existing HiFi sources.\u003c\/p\u003e\n\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReference desktop headphone systems\u003c\/li\u003e\n\u003cli\u003eHigh-end DAC and preamplifier upgrades\u003c\/li\u003e\n\u003cli\u003eBalanced headphones and active monitor systems\u003c\/li\u003e\n\u003cli\u003eMulti-source desktop or living-room HiFi systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePortable or battery-powered listening\u003c\/li\u003e\n\u003cli\u003eDirectly driving passive loudspeakers\u003c\/li\u003e\n\u003cli\u003eUsers who only need a simple USB dongle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_CMA18_Master_003.webp\" alt=\"Questyle CMA Eighteen Master full-chain Current Mode architecture\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_CMA18_Master_005.webp\" alt=\"Questyle CMA Eighteen Master rear connections and system integration\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_CMA18_Master_006.webp\" alt=\"Questyle CMA Eighteen Master desktop HiFi listening setup\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThis is the desktop CMA Eighteen Master, not the battery-powered CMA18 Portable.\u003c\/li\u003e\n\u003cli\u003eIt is a DAC, preamplifier and headphone amplifier; it does not contain a loudspeaker power amplifier.\u003c\/li\u003e\n\u003cli\u003eConnect passive speakers through a separate power amplifier or integrated amplifier.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan it drive passive speakers directly?\u003c\/h3\u003e\u003cp\u003eNo. Use its line output with an external power amplifier or active speakers.\u003c\/p\u003e\u003ch3\u003eCan it be used as a preamplifier?\u003c\/h3\u003e\u003cp\u003eYes, connect its line output to a compatible power amplifier or active monitors.\u003c\/p\u003e\u003ch3\u003eCan I connect a computer?\u003c\/h3\u003e\u003cp\u003eYes, use the appropriate digital input and install the official driver where required.\u003c\/p\u003e\u003ch3\u003eDoes it support balanced headphones?\u003c\/h3\u003e\u003cp\u003eYes, it provides balanced headphone connectivity as well as single-ended headphone use.\u003c\/p\u003e\u003ch3\u003eIs this the CMA18 Portable?\u003c\/h3\u003e\u003cp\u003eNo. This listing is for the full-size desktop CMA Eighteen Master.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eDesktop Headphone System\u003c\/h3\u003e\u003cp\u003eSource: PC \/ Mac\u003cbr\u003eConnection: USB audio\u003cbr\u003eOutput: Balanced or single-ended headphone output\u003cbr\u003eTarget: Wired headphones\u003c\/p\u003e\u003ch3\u003eActive Speaker System\u003c\/h3\u003e\u003cp\u003eSource: Digital or analogue source\u003cbr\u003eConnection: Compatible input\u003cbr\u003eOutput: Line \/ preamplifier output\u003cbr\u003eTarget: Active speakers\u003c\/p\u003e\u003ch3\u003eHiFi Preamp System\u003c\/h3\u003e\u003cp\u003eSource: Streamer \/ CD transport\u003cbr\u003eConnection: Digital input\u003cbr\u003eOutput: Balanced or RCA line output\u003cbr\u003eTarget: Power amplifier and passive speakers\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\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\u003eDesktop DAC \/ preamplifier \/ headphone amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArchitecture\u003c\/td\u003e\n\u003ctd\u003eFully balanced full-chain Current Mode design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital sources\u003c\/td\u003e\n\u003ctd\u003eComputer, digital transport and compatible digital audio sources\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalogue input\u003c\/td\u003e\n\u003ctd\u003eLine-level analogue input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadphone outputs\u003c\/td\u003e\n\u003ctd\u003eBalanced and single-ended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLine outputs\u003c\/td\u003e\n\u003ctd\u003eBalanced and unbalanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeaker amplification\u003c\/td\u003e\n\u003ctd\u003eNot built in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003eAC-powered desktop component\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat's in the box\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eQuestyle CMA Eighteen Master\u003c\/li\u003e\n\u003cli\u003ePower cable\u003c\/li\u003e\n\u003cli\u003eRemote control\u003c\/li\u003e\n\u003cli\u003eProduct documentation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDownload Center\u003c\/h2\u003e\u003cp\u003eAccess product manuals, firmware updates, and additional support resources.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/emiuzek.com\/pages\/download\"\u003eDownload Center\u003c\/a\u003e\u003c\/p\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch2\u003e📊 Comparison: Which Flagship Desktop DAC\/Amp Is Right for You?\u003c\/h2\u003e\u003cp\u003eChoose CMA Eighteen Master for Current Mode sound, extensive source flexibility and a flagship all-in-one system; choose RME for deep DSP control, or FiiO K19 when HDMI ARC and very high headphone power are priorities.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eQuestyle CMA Eighteen Master\u003c\/th\u003e\n\u003cth\u003eRME ADI-2 DAC FS\u003c\/th\u003e\n\u003cth\u003eFiiO K19\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore buying reason\u003c\/td\u003e\n\u003ctd\u003eFlagship Current Mode desktop system\u003c\/td\u003e\n\u003ctd\u003eReference DAC with powerful DSP\u003c\/td\u003e\n\u003ctd\u003eHigh-power desktop DAC\/amp with HDMI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDAC architecture\u003c\/td\u003e\n\u003ctd\u003eESS ES9038PRO\u003c\/td\u003e\n\u003ctd\u003eRME reference conversion platform\u003c\/td\u003e\n\u003ctd\u003eDual ESS ES9039SPRO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum USB playback\u003c\/td\u003e\n\u003ctd\u003ePCM 768kHz \/ DSD512\u003c\/td\u003e\n\u003ctd\u003ePCM 768kHz \/ DSD\u003c\/td\u003e\n\u003ctd\u003ePCM 768kHz \/ DSD512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadphone connection\u003c\/td\u003e\n\u003ctd\u003e4.4mm balanced and 6.35mm\u003c\/td\u003e\n\u003ctd\u003e6.35mm plus dedicated IEM output\u003c\/td\u003e\n\u003ctd\u003e4.4mm, 6.35mm and 4-pin XLR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalogue input\u003c\/td\u003e\n\u003ctd\u003eIncluded for multi-source integration\u003c\/td\u003e\n\u003ctd\u003eNot on ADI-2 DAC FS\u003c\/td\u003e\n\u003ctd\u003eNot the main use case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDSP \/ EQ focus\u003c\/td\u003e\n\u003ctd\u003eSound-path and hardware focused\u003c\/td\u003e\n\u003ctd\u003eExtensive PEQ, loudness and crossfeed\u003c\/td\u003e\n\u003ctd\u003eApp and onboard DSP features\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHDMI ARC\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest choice when\u003c\/td\u003e\n\u003ctd\u003eYou want Questyle Current Mode sound and a flagship preamp\/headphone hub\u003c\/td\u003e\n\u003ctd\u003eYou need precise headphone correction and measurement-style control\u003c\/td\u003e\n\u003ctd\u003eYou need HDMI, Bluetooth and maximum connection flexibility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Questyle","offers":[{"title":"Black","offer_id":43721420275805,"sku":"Questyle-CMA18-Master-Hi-Res-DAC-AMP-Black","price":2337.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/QuestyleCMA18Master_007.webp?v=1760778695"},{"product_id":"questyle-qcc","title":"Questyle QCC Dongle Pro","description":"\u003cp\u003eQuestyle QCC Dongle Pro is a compact USB-C lossless Bluetooth transmitter that upgrades compatible phones, computers and game consoles with higher-quality wireless audio codecs.\u003c\/p\u003e\u003cp\u003eMFi certification, LDAC support and Questyle app control make it a practical way to improve wireless headphone listening without replacing the source device.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eLDAC for Apple devices\u003c\/h3\u003e\u003cp\u003eEnables compatible Apple sources to transmit LDAC audio to supported wireless headphones.\u003c\/p\u003e\u003ch3\u003eMFi-certified design\u003c\/h3\u003e\u003cp\u003eOfficial Apple ecosystem certification supports dependable plug-and-play operation with compatible devices.\u003c\/p\u003e\u003ch3\u003eModern Bluetooth platform\u003c\/h3\u003e\u003cp\u003eBluetooth 5.4 and supported high-quality codecs provide a flexible wireless upgrade.\u003c\/p\u003e\u003ch3\u003eCompact multi-device use\u003c\/h3\u003e\u003cp\u003eThe small USB-C format works across compatible mobile, computer and gaming sources.\u003c\/p\u003e\n\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWireless headphones with LDAC support\u003c\/li\u003e\n\u003cli\u003eiPhone, iPad and Mac users wanting better Bluetooth codecs\u003c\/li\u003e\n\u003cli\u003ePC and console wireless audio\u003c\/li\u003e\n\u003cli\u003eTravel and compact desktop setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWired headphones requiring a DAC or headphone output\u003c\/li\u003e\n\u003cli\u003eReceiving Bluetooth audio into an amplifier\u003c\/li\u003e\n\u003cli\u003eHeadphones outside the supported codec and compatibility list\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_QCC_Dongle_Pro_011.webp\" alt=\"Questyle QCC Dongle Pro supported lossless Bluetooth codecs\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_QCC_Dongle_Pro_013.webp\" alt=\"Questyle QCC Dongle Pro USB-C connection and controls\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_QCC_Dongle_Pro_014.webp\" alt=\"Questyle QCC Dongle Pro wireless headphone setup\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThis is a Bluetooth transmitter, not a Bluetooth receiver or wired headphone DAC.\u003c\/li\u003e\n\u003cli\u003eThe connected headphones must support the selected codec; actual codec choice depends on both devices.\u003c\/li\u003e\n\u003cli\u003eCheck Questyle’s headset whitelist when compatibility with a specific model is essential.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan it power wired headphones?\u003c\/h3\u003e\u003cp\u003eNo. It sends Bluetooth audio and has no analogue headphone output.\u003c\/p\u003e\u003ch3\u003eIs it a Bluetooth receiver?\u003c\/h3\u003e\u003cp\u003eNo, it transmits audio from the connected source to Bluetooth headphones or speakers.\u003c\/p\u003e\u003ch3\u003eDoes it work with Apple devices?\u003c\/h3\u003e\u003cp\u003eIt is MFi certified; connection requirements vary by the Apple device and port.\u003c\/p\u003e\u003ch3\u003eCan it work with a PC?\u003c\/h3\u003e\u003cp\u003eYes, with a compatible USB connection.\u003c\/p\u003e\u003ch3\u003eCan I use it with a game console?\u003c\/h3\u003e\u003cp\u003eIt is intended for compatible console and handheld USB audio use; verify the specific platform and headset.\u003c\/p\u003e\u003ch3\u003eDoes every headset receive LDAC?\u003c\/h3\u003e\u003cp\u003eNo. The receiving headset must support LDAC.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003ePhone or Tablet\u003c\/h3\u003e\u003cp\u003eSource: Compatible mobile device\u003cbr\u003eConnection: USB-C \/ compatible adapter\u003cbr\u003eWireless output: Selected Bluetooth codec\u003cbr\u003eTarget: Bluetooth headphones\u003c\/p\u003e\u003ch3\u003eComputer\u003c\/h3\u003e\u003cp\u003eSource: PC \/ Mac\u003cbr\u003eConnection: USB-C or USB-A adapter\u003cbr\u003eWireless output: Bluetooth\u003cbr\u003eTarget: Wireless headphones or speakers\u003c\/p\u003e\u003ch3\u003eGaming Setup\u003c\/h3\u003e\u003cp\u003eSource: Compatible console \/ handheld\u003cbr\u003eConnection: USB audio\u003cbr\u003eWireless output: Bluetooth\u003cbr\u003eTarget: Supported gaming headset\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\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\u003eUSB Bluetooth audio transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth version\u003c\/td\u003e\n\u003ctd\u003eBluetooth 5.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHighlighted codecs\u003c\/td\u003e\n\u003ctd\u003eLDAC and supported Qualcomm Bluetooth codecs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHost connection\u003c\/td\u003e\n\u003ctd\u003eUSB-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApple certification\u003c\/td\u003e\n\u003ctd\u003eMFi certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl\u003c\/td\u003e\n\u003ctd\u003eQuestyle companion app\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalogue headphone output\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating mode\u003c\/td\u003e\n\u003ctd\u003eTransmit only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat's in the box\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eQuestyle QCC Dongle Pro\u003c\/li\u003e\n\u003cli\u003eUSB-C to USB-A adapter\u003c\/li\u003e\n\u003cli\u003eProduct documentation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDownload Center\u003c\/h2\u003e\u003cp\u003eAccess product manuals, firmware updates, and additional support resources.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/emiuzek.com\/pages\/download\"\u003eDownload Center\u003c\/a\u003e\u003c\/p\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch2\u003e📊 Comparison: Which Bluetooth Transmitter Is Right for You?\u003c\/h2\u003e\u003cp\u003eChoose QCC Dongle Pro for MFi-certified Apple use and both LDAC and aptX Lossless; choose FiiO BT11 for lower-cost codec coverage, or Creative BT-W6 for PC gaming, LE Audio and microphone features.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eQuestyle QCC Dongle Pro\u003c\/th\u003e\n\u003cth\u003eFiiO BT11\u003c\/th\u003e\n\u003cth\u003eCreative BT-W6\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore buying reason\u003c\/td\u003e\n\u003ctd\u003eApple-friendly premium codec transmitter\u003c\/td\u003e\n\u003ctd\u003eValue-focused multi-codec transmitter\u003c\/td\u003e\n\u003ctd\u003ePC and gaming feature specialist\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth version\u003c\/td\u003e\n\u003ctd\u003e5.4\u003c\/td\u003e\n\u003ctd\u003eModern Qualcomm platform\u003c\/td\u003e\n\u003ctd\u003e5.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLDAC\u003c\/td\u003e\n\u003ctd\u003eUp to 990kbps with compatible receiver\u003c\/td\u003e\n\u003ctd\u003eUp to 990kbps with compatible receiver\u003c\/td\u003e\n\u003ctd\u003eNot supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eaptX Lossless\u003c\/td\u003e\n\u003ctd\u003eSupported\u003c\/td\u003e\n\u003ctd\u003eSupported\u003c\/td\u003e\n\u003ctd\u003eSupported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLE Audio \/ LC3\u003c\/td\u003e\n\u003ctd\u003eNot the primary selling point\u003c\/td\u003e\n\u003ctd\u003eLE Audio platform\u003c\/td\u003e\n\u003ctd\u003eLC3, GMAP, Unicast and Broadcast\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApple certification\u003c\/td\u003e\n\u003ctd\u003eMFi certified\u003c\/td\u003e\n\u003ctd\u003eNo MFi claim\u003c\/td\u003e\n\u003ctd\u003eNo MFi claim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp focus\u003c\/td\u003e\n\u003ctd\u003ePairing and codec control\u003c\/td\u003e\n\u003ctd\u003eFiiO Control\u003c\/td\u003e\n\u003ctd\u003eWindows app with EQ and gaming tools\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB-A adapter\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003ctd\u003eNot included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest choice when\u003c\/td\u003e\n\u003ctd\u003eYou want LDAC or aptX Lossless from Apple and multiple sources\u003c\/td\u003e\n\u003ctd\u003eYou want broad codecs at a lower price\u003c\/td\u003e\n\u003ctd\u003eYou prioritise PC gaming, microphone support and LE Audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Questyle","offers":[{"title":"Black","offer_id":43788735610973,"sku":"Questyle-QCC-Dongle-Pro-Black","price":77.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_QCC_Dongle_Pro.webp?v=1785397100"},{"product_id":"questyle-nhb12","title":"Questyle NHB12","description":"\u003cp\u003eQuestyle NHB12 is an MFi-certified lossless in-ear headphone system with a Lightning DAC\/amplifier cable for high-resolution listening from compatible Apple devices.\u003c\/p\u003e\u003cp\u003eA 10.2mm dynamic driver, Current Mode amplification and interchangeable Lightning and 3.5mm cables combine portable convenience with flexible wired use.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eIntegrated Lightning DAC and amplifier\u003c\/h3\u003e\u003cp\u003eThe supplied digital cable bypasses the source’s analogue headphone stage for a single-cable Apple listening solution.\u003c\/p\u003e\u003ch3\u003e192kHz \/ 24-bit playback\u003c\/h3\u003e\u003cp\u003eSupports high-resolution PCM playback from compatible apps and Apple devices.\u003c\/p\u003e\u003ch3\u003eCurrent Mode signal path\u003c\/h3\u003e\u003cp\u003eQuestyle’s low-power Current Mode SiP is built into the digital cable.\u003c\/p\u003e\u003ch3\u003eInterchangeable cable system\u003c\/h3\u003e\u003cp\u003eUse the digital Lightning cable or switch to the supplied 3.5mm analogue cable.\u003c\/p\u003e\n\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLightning-equipped iPhone and iPad listening\u003c\/li\u003e\n\u003cli\u003eApple Music lossless playback\u003c\/li\u003e\n\u003cli\u003ePortable wired HiFi without a separate dongle\u003c\/li\u003e\n\u003cli\u003eListeners who also use 3.5mm sources\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUSB-C-only devices without an appropriate connection\u003c\/li\u003e\n\u003cli\u003eUsers requiring active noise cancellation\u003c\/li\u003e\n\u003cli\u003eWireless Bluetooth listening\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_NHB12_009.webp\" alt=\"Questyle NHB12 192kHz lossless audio and Current Mode DAC cable\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_NHB12_018.gif\" alt=\"Questyle NHB12 Lightning and 3.5mm interchangeable cable connection\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_NHB12_021.webp\" alt=\"Questyle NHB12 portable lossless listening scenario\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThe built-in DAC and amplifier are in the Lightning cable, not inside the earpieces.\u003c\/li\u003e\n\u003cli\u003eUse the 3.5mm cable for conventional headphone outputs; high-resolution decoding then depends on the source device.\u003c\/li\u003e\n\u003cli\u003eNHB12 is a wired IEM and does not provide Bluetooth or active noise cancellation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eDoes it need an external DAC?\u003c\/h3\u003e\u003cp\u003eNo when using the supplied Lightning DAC\/amplifier cable with a compatible device.\u003c\/p\u003e\u003ch3\u003eCan it connect to a 3.5mm player?\u003c\/h3\u003e\u003cp\u003eYes, use the supplied 3.5mm cable.\u003c\/p\u003e\u003ch3\u003eDoes it support 192kHz \/ 24-bit audio?\u003c\/h3\u003e\u003cp\u003eYes, through the compatible digital cable and playback software.\u003c\/p\u003e\u003ch3\u003eDoes it have active noise cancellation?\u003c\/h3\u003e\u003cp\u003eNo. Isolation is provided by the in-ear fit.\u003c\/p\u003e\u003ch3\u003eCan the cable be replaced?\u003c\/h3\u003e\u003cp\u003eYes, it uses an interchangeable 2-pin cable system.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eLightning Apple Device\u003c\/h3\u003e\u003cp\u003eSource: iPhone \/ iPad with Lightning\u003cbr\u003eConnection: Supplied Lightning DAC cable\u003cbr\u003eOutput: 2-pin IEM connection\u003cbr\u003eTarget: NHB12 earpieces\u003c\/p\u003e\u003ch3\u003ePortable Music Player\u003c\/h3\u003e\u003cp\u003eSource: DAP \/ portable DAC\u003cbr\u003eConnection: Supplied 3.5mm cable\u003cbr\u003eOutput: Analogue headphone output\u003cbr\u003eTarget: NHB12 earpieces\u003c\/p\u003e\u003ch3\u003eDesktop Audio\u003c\/h3\u003e\u003cp\u003eSource: DAC \/ headphone amplifier\u003cbr\u003eConnection: 3.5mm headphone output\u003cbr\u003eTarget: NHB12 earpieces\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\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\u003eWired in-ear headphones with digital DAC cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDriver\u003c\/td\u003e\n\u003ctd\u003e10.2mm dynamic driver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital playback\u003c\/td\u003e\n\u003ctd\u003eUp to PCM 192kHz \/ 24-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplification\u003c\/td\u003e\n\u003ctd\u003eQuestyle Current Mode SiP in digital cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital connection\u003c\/td\u003e\n\u003ctd\u003eApple Lightning, MFi certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalogue connection\u003c\/td\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEarpiece cable interface\u003c\/td\u003e\n\u003ctd\u003eDetachable 2-pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWireless \/ ANC\u003c\/td\u003e\n\u003ctd\u003eNot included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat's in the box\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eQuestyle NHB12 earphones\u003c\/li\u003e\n\u003cli\u003eLightning DAC\/amplifier cable\u003c\/li\u003e\n\u003cli\u003e3.5mm analogue cable\u003c\/li\u003e\n\u003cli\u003eEar tips\u003c\/li\u003e\n\u003cli\u003eCarrying case\u003c\/li\u003e\n\u003cli\u003eProduct documentation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDownload Center\u003c\/h2\u003e\u003cp\u003eAccess product manuals, firmware updates, and additional support resources.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/emiuzek.com\/pages\/download\"\u003eDownload Center\u003c\/a\u003e\u003c\/p\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch2\u003e📊 Comparison: Which Lightning HiFi Setup Is Right for You?\u003c\/h2\u003e\u003cp\u003eChoose NHB12 when you want genuine 192kHz\/24-bit Lightning playback without a separate dongle; choose basic Lightning earphones for simplicity and calls, or a separate DAC plus IEM when upgrade flexibility matters most.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eQuestyle NHB12\u003c\/th\u003e\n\u003cth\u003eBasic Lightning Earphones\u003c\/th\u003e\n\u003cth\u003eIEM + External Lightning DAC\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore buying reason\u003c\/td\u003e\n\u003ctd\u003eIntegrated high-resolution Questyle system\u003c\/td\u003e\n\u003ctd\u003eLowest complexity and cost\u003c\/td\u003e\n\u003ctd\u003eMaximum component choice\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum digital playback\u003c\/td\u003e\n\u003ctd\u003eUp to 192kHz \/ 24-bit\u003c\/td\u003e\n\u003ctd\u003eTypically limited below 192kHz\u003c\/td\u003e\n\u003ctd\u003eDepends on the selected DAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDAC \/ amplifier\u003c\/td\u003e\n\u003ctd\u003eBuilt into the Lightning cable\u003c\/td\u003e\n\u003ctd\u003eBuilt into the cable\u003c\/td\u003e\n\u003ctd\u003eSeparate dongle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDriver\u003c\/td\u003e\n\u003ctd\u003e10.2mm dynamic driver\u003c\/td\u003e\n\u003ctd\u003eModel dependent\u003c\/td\u003e\n\u003ctd\u003eChoose any compatible IEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3.5mm source use\u003c\/td\u003e\n\u003ctd\u003eIncluded interchangeable cable\u003c\/td\u003e\n\u003ctd\u003eUsually unavailable\u003c\/td\u003e\n\u003ctd\u003eDepends on the IEM cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePocket complexity\u003c\/td\u003e\n\u003ctd\u003eOne cable, no extra dongle\u003c\/td\u003e\n\u003ctd\u003eOne cable\u003c\/td\u003e\n\u003ctd\u003eExtra DAC and connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpgrade flexibility\u003c\/td\u003e\n\u003ctd\u003eReplaceable 2-pin cables\u003c\/td\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003ctd\u003eHighest\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest choice when\u003c\/td\u003e\n\u003ctd\u003eYou want a refined one-cable Lightning HiFi solution\u003c\/td\u003e\n\u003ctd\u003eYou mainly need calls and casual listening\u003c\/td\u003e\n\u003ctd\u003eYou want to choose and upgrade DAC and IEM separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Questyle","offers":[{"title":"Black\/Silver","offer_id":43788746162269,"sku":"Questyle-NHB12-Black-Silver","price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle-NHB12_001.webp?v=1762994575"},{"product_id":"questyle-nhb15","title":"Questyle NHB15 USB-C Noise-Cancelling IEMs","description":"\u003cp\u003eQuestyle NHB15 is a USB-C true-lossless in-ear headphone system with an integrated digital DAC\/amplifier cable for compatible phones, tablets and computers.\u003c\/p\u003e\u003cp\u003eIt supports up to 192kHz \/ 24-bit playback, uses Questyle Current Mode technology and includes a replaceable 3.5mm cable for conventional analogue sources.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003eUSB-C true-lossless connection\u003c\/h3\u003e\u003cp\u003eConnects directly to compatible USB-C devices without a separate headphone dongle.\u003c\/p\u003e\u003ch3\u003e192kHz \/ 24-bit playback\u003c\/h3\u003e\u003cp\u003eSupports high-resolution PCM playback from compatible hardware and software.\u003c\/p\u003e\u003ch3\u003eCurrent Mode DAC\/amplifier cable\u003c\/h3\u003e\u003cp\u003eQuestyle’s low-power Current Mode SiP provides digital decoding and headphone drive.\u003c\/p\u003e\u003ch3\u003eReplaceable dual-cable design\u003c\/h3\u003e\u003cp\u003eSwitch between the supplied USB-C digital cable and conventional 3.5mm analogue cable.\u003c\/p\u003e\n\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUSB-C phones, tablets and computers\u003c\/li\u003e\n\u003cli\u003ePortable high-resolution wired listening\u003c\/li\u003e\n\u003cli\u003eUsers wanting digital and 3.5mm compatibility\u003c\/li\u003e\n\u003cli\u003eLow-latency wired music and video use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUsers specifically requiring active noise cancellation\u003c\/li\u003e\n\u003cli\u003eWireless Bluetooth listening\u003c\/li\u003e\n\u003cli\u003eLightning-only devices without a compatible adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_NHB15_010.webp\" alt=\"Questyle NHB15 192kHz USB-C true lossless audio performance\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_NHB15_014.webp\" alt=\"Questyle NHB15 USB-C and 3.5mm replaceable cable connections\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Questyle_NHB15_025.webp\" alt=\"Questyle NHB15 portable USB-C HiFi listening scenario\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eNHB15 is a wired USB-C true-lossless earphone; the official guide does not specify active noise cancellation.\u003c\/li\u003e\n\u003cli\u003eUSB-C audio compatibility depends on the connected device supporting digital USB audio.\u003c\/li\u003e\n\u003cli\u003eUse the supplied 3.5mm cable for analogue sources; decoding quality then depends on the source.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eDoes NHB15 have active noise cancellation?\u003c\/h3\u003e\u003cp\u003eNo ANC function is specified in Questyle’s official NHB15 guide.\u003c\/p\u003e\u003ch3\u003eDoes it need a separate DAC?\u003c\/h3\u003e\u003cp\u003eNo when using the supplied USB-C digital DAC\/amplifier cable with a compatible source.\u003c\/p\u003e\u003ch3\u003eCan it connect to a 3.5mm output?\u003c\/h3\u003e\u003cp\u003eYes, use the supplied 3.5mm cable.\u003c\/p\u003e\u003ch3\u003eDoes it support 192kHz \/ 24-bit?\u003c\/h3\u003e\u003cp\u003eYes, with compatible USB-C hardware and playback software.\u003c\/p\u003e\u003ch3\u003eCan the cable be replaced?\u003c\/h3\u003e\u003cp\u003eYes, the cable system is replaceable.\u003c\/p\u003e\u003ch3\u003eDoes it use Bluetooth?\u003c\/h3\u003e\u003cp\u003eNo, it is a wired earphone system.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eUSB-C Phone or Tablet\u003c\/h3\u003e\u003cp\u003eSource: Compatible USB-C mobile device\u003cbr\u003eConnection: Supplied USB-C digital cable\u003cbr\u003eTarget: NHB15 earpieces\u003c\/p\u003e\u003ch3\u003eUSB-C Computer\u003c\/h3\u003e\u003cp\u003eSource: PC \/ Mac \/ compatible computer\u003cbr\u003eConnection: USB-C audio\u003cbr\u003eTarget: NHB15 earpieces\u003c\/p\u003e\u003ch3\u003eAnalogue Player\u003c\/h3\u003e\u003cp\u003eSource: DAP \/ DAC \/ headphone amplifier\u003cbr\u003eConnection: Supplied 3.5mm cable\u003cbr\u003eTarget: NHB15 earpieces\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\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\u003eUSB-C true-lossless wired in-ear headphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum digital playback\u003c\/td\u003e\n\u003ctd\u003ePCM 192kHz \/ 24-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplification\u003c\/td\u003e\n\u003ctd\u003eQuestyle Current Mode SiP in digital cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital connection\u003c\/td\u003e\n\u003ctd\u003eUSB-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalogue connection\u003c\/td\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable design\u003c\/td\u003e\n\u003ctd\u003eReplaceable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded ear-tip sizes\u003c\/td\u003e\n\u003ctd\u003eXS, S, M, L and XL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth \/ ANC\u003c\/td\u003e\n\u003ctd\u003eNot specified \/ not included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat's in the box\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eQuestyle NHB15 earphones\u003c\/li\u003e\n\u003cli\u003eUSB-C digital cable\u003c\/li\u003e\n\u003cli\u003e3.5mm to 2-pin cable\u003c\/li\u003e\n\u003cli\u003eFive pairs of ear tips: XS, S, M, L and XL\u003c\/li\u003e\n\u003cli\u003eLeather carrying case\u003c\/li\u003e\n\u003cli\u003eQuick-start guide\u003c\/li\u003e\n\u003cli\u003eWarranty card\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDownload Center\u003c\/h2\u003e\u003cp\u003eAccess product manuals, firmware updates, and additional support resources.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/emiuzek.com\/pages\/download\"\u003eDownload Center\u003c\/a\u003e\u003c\/p\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch2\u003e📊 Comparison: Which USB-C IEM Setup Is Right for You?\u003c\/h2\u003e\u003cp\u003eChoose NHB15 for a ready-to-use 192kHz\/24-bit Current Mode system with both USB-C and 3.5mm cables; choose MOONDROP MAY for app-based DSP tuning, or a separate DAC plus IEM for maximum upgrade freedom.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eQuestyle NHB15\u003c\/th\u003e\n\u003cth\u003eMOONDROP MAY\u003c\/th\u003e\n\u003cth\u003eIEM + External USB-C DAC\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore buying reason\u003c\/td\u003e\n\u003ctd\u003eTrue-lossless Current Mode cable system\u003c\/td\u003e\n\u003ctd\u003eUSB-C DSP tuning at a lower price\u003c\/td\u003e\n\u003ctd\u003eMaximum component flexibility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital connection\u003c\/td\u003e\n\u003ctd\u003eUSB-C DAC\/amplifier cable\u003c\/td\u003e\n\u003ctd\u003eUSB-C DSP cable\u003c\/td\u003e\n\u003ctd\u003eSeparate USB-C DAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum stated playback\u003c\/td\u003e\n\u003ctd\u003e192kHz \/ 24-bit\u003c\/td\u003e\n\u003ctd\u003eDSP-focused; not sold primarily on 192kHz playback\u003c\/td\u003e\n\u003ctd\u003eDepends on the selected DAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDriver design\u003c\/td\u003e\n\u003ctd\u003eQuestyle-tuned IEM system\u003c\/td\u003e\n\u003ctd\u003e10mm dynamic + 6mm planar\u003c\/td\u003e\n\u003ctd\u003eChoose any compatible IEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSound adjustment\u003c\/td\u003e\n\u003ctd\u003eHardware-focused fixed tuning\u003c\/td\u003e\n\u003ctd\u003eMOONDROP app DSP presets and tuning\u003c\/td\u003e\n\u003ctd\u003eDepends on DAC, app and IEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3.5mm cable\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003ctd\u003eRequires a separate compatible cable\u003c\/td\u003e\n\u003ctd\u003eUsually available through the IEM cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eANC\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eUsually no\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest choice when\u003c\/td\u003e\n\u003ctd\u003eYou want high-resolution plug-and-play plus analogue flexibility\u003c\/td\u003e\n\u003ctd\u003eYou prefer DSP experimentation and value\u003c\/td\u003e\n\u003ctd\u003eYou want to upgrade the DAC and IEM independently\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Questyle","offers":[{"title":"Silver","offer_id":43792843538525,"sku":"Questyle-NHB15-USB-C-Noise-Cancelling-IEMs-Silver","price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/QuestyleNHB15_003.webp?v=1762996399"},{"product_id":"questyle-sigma","title":"Questyle SIGMA","description":"\u003cp\u003eQuestyle SIGMA is a portable decoding all-in-one DAC and headphone amplifier designed to bring desktop-style audio performance to compact mobile and transportable systems.\u003c\/p\u003e\u003cp\u003eIts integrated digital decoding, Current Mode headphone amplification and balanced listening capability make it a flexible upgrade for phones, computers and wired headphones.\u003c\/p\u003e\n\u003ch2\u003eWhy it stands out\u003c\/h2\u003e\u003ch3\u003ePortable desktop performance\u003c\/h3\u003e\u003cp\u003eDesigned around Questyle’s goal of delivering desktop-level audio quality in a compact chassis.\u003c\/p\u003e\u003ch3\u003eIntegrated decoding and amplification\u003c\/h3\u003e\u003cp\u003eCombines digital source decoding and headphone drive in one portable component.\u003c\/p\u003e\u003ch3\u003eCurrent Mode amplification\u003c\/h3\u003e\u003cp\u003eQuestyle’s Current Mode topology is engineered for fast transient response and low distortion.\u003c\/p\u003e\u003ch3\u003eFlexible mobile and desktop use\u003c\/h3\u003e\u003cp\u003eWorks as a transportable DAC\/headphone amplifier across compatible mobile and computer sources.\u003c\/p\u003e\n\u003ch2\u003eBest for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTransportable high-end headphone systems\u003c\/li\u003e\n\u003cli\u003ePhone and computer lossless playback\u003c\/li\u003e\n\u003cli\u003eBalanced wired headphones and IEMs\u003c\/li\u003e\n\u003cli\u003eListeners wanting more capability than a small dongle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNot ideal for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirectly driving passive loudspeakers\u003c\/li\u003e\n\u003cli\u003eWireless-only headphone users\u003c\/li\u003e\n\u003cli\u003eUsers seeking a tiny cable-style dongle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/DM_20260807132705_001_92875baa-9fac-465a-8168-a76359dcd80c.png?v=1786084545\" alt=\"Questyle SIGMA portable desktop-performance DAC and headphone amplifier\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/DM_20260807132713_001.png?v=1786080468\" alt=\"Questyle SIGMA digital inputs and balanced headphone connections\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/DM_20260807132719_001.png?v=1786080471\" alt=\"Questyle SIGMA transportable headphone listening system\" loading=\"lazy\" style=\"width:100%;height:auto;display:block;margin:0 auto;\"\u003e\u003c\/p\u003e\n\u003ch2\u003eEMiUZEK Buying Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSIGMA is a portable DAC and headphone amplifier, not a speaker power amplifier.\u003c\/li\u003e\n\u003cli\u003eIt is intended for compatible digital sources and wired headphones or IEMs.\u003c\/li\u003e\n\u003cli\u003eConfirm cable and connector compatibility with your source and headphones before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eCan SIGMA drive passive speakers?\u003c\/h3\u003e\u003cp\u003eNo. It is a DAC\/headphone amplifier rather than a loudspeaker power amplifier.\u003c\/p\u003e\u003ch3\u003eCan it connect to a phone?\u003c\/h3\u003e\u003cp\u003eYes, with a compatible digital connection and cable.\u003c\/p\u003e\u003ch3\u003eCan it be used with a computer?\u003c\/h3\u003e\u003cp\u003eYes, as a compatible USB audio device.\u003c\/p\u003e\u003ch3\u003eDoes it work with balanced headphones?\u003c\/h3\u003e\u003cp\u003eUse the supported balanced headphone connection shown for the product and a correctly wired cable.\u003c\/p\u003e\u003ch3\u003eIs it a Bluetooth-only device?\u003c\/h3\u003e\u003cp\u003eNo. Its primary role is wired digital decoding and headphone amplification.\u003c\/p\u003e\u003ch3\u003eIs it smaller than a desktop DAC\/amp?\u003c\/h3\u003e\u003cp\u003eYes, it is designed as a portable decoding all-in-one.\u003c\/p\u003e\n\u003ch2\u003eHOW TO CONNECT\u003c\/h2\u003e\u003ch3\u003eMobile Headphone System\u003c\/h3\u003e\u003cp\u003eSource: Compatible phone \/ tablet\u003cbr\u003eConnection: USB digital audio\u003cbr\u003eOutput: Headphone output\u003cbr\u003eTarget: Wired IEMs or headphones\u003c\/p\u003e\u003ch3\u003eComputer Desktop System\u003c\/h3\u003e\u003cp\u003eSource: PC \/ Mac\u003cbr\u003eConnection: USB audio\u003cbr\u003eOutput: Balanced or single-ended headphone output\u003cbr\u003eTarget: Wired headphones\u003c\/p\u003e\u003ch3\u003eHiFi Line System\u003c\/h3\u003e\u003cp\u003eSource: Compatible digital source\u003cbr\u003eConnection: Digital audio\u003cbr\u003eOutput: Supported line output\u003cbr\u003eTarget: Active speakers or external amplifier\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\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\u003ePortable decoding all-in-one DAC \/ headphone amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplification\u003c\/td\u003e\n\u003ctd\u003eQuestyle Current Mode architecture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary sources\u003c\/td\u003e\n\u003ctd\u003eCompatible phones, tablets and computers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio path\u003c\/td\u003e\n\u003ctd\u003eDigital decoding with analogue headphone amplification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadphone use\u003c\/td\u003e\n\u003ctd\u003eWired balanced and single-ended listening\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeaker power amplifier\u003c\/td\u003e\n\u003ctd\u003eNot included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirmware support\u003c\/td\u003e\n\u003ctd\u003eQuestyle SIGMA firmware available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm factor\u003c\/td\u003e\n\u003ctd\u003ePortable \/ transportable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat's in the box\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eQuestyle SIGMA\u003c\/li\u003e\n\u003cli\u003eUSB data cable\u003c\/li\u003e\n\u003cli\u003eProduct documentation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDownload Center\u003c\/h2\u003e\u003cp\u003eAccess product manuals, firmware updates, and additional support resources.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/emiuzek.com\/pages\/download\"\u003eDownload Center\u003c\/a\u003e\u003c\/p\u003e\u003ch2\u003eAdditional Product Content\u003c\/h2\u003e\u003ch2\u003e📊 Comparison: Which Portable DAC\/Amp Is Right for You?\u003c\/h2\u003e\u003cp\u003eChoose SIGMA for Questyle Current Mode sound and portable desktop-style performance; choose FiiO Q15 for its display and broader Bluetooth\/coaxial features, or iFi xDSD Gryphon for analogue sound shaping and wireless flexibility.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eQuestyle SIGMA\u003c\/th\u003e\n\u003cth\u003eFiiO Q15\u003c\/th\u003e\n\u003cth\u003eiFi xDSD Gryphon\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore buying reason\u003c\/td\u003e\n\u003ctd\u003eCurrent Mode portable reference system\u003c\/td\u003e\n\u003ctd\u003eFeature-rich digital portable DAC\/amp\u003c\/td\u003e\n\u003ctd\u003ePortable DAC\/amp with analogue sound controls\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum digital playback\u003c\/td\u003e\n\u003ctd\u003ePCM 768kHz \/ DSD512\u003c\/td\u003e\n\u003ctd\u003ePCM 768kHz \/ DSD512\u003c\/td\u003e\n\u003ctd\u003ePCM 768kHz with high-resolution DSD support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier approach\u003c\/td\u003e\n\u003ctd\u003eQuestyle Current Mode amplification\u003c\/td\u003e\n\u003ctd\u003eHigh-power portable headphone stage\u003c\/td\u003e\n\u003ctd\u003eiFi balanced analogue amplification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eInterface focused on portable operation\u003c\/td\u003e\n\u003ctd\u003eColour status display\u003c\/td\u003e\n\u003ctd\u003eOLED status display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth\u003c\/td\u003e\n\u003ctd\u003eCheck selected SIGMA operating mode\u003c\/td\u003e\n\u003ctd\u003eBluetooth decoding supported\u003c\/td\u003e\n\u003ctd\u003eHigh-resolution Bluetooth supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital inputs\u003c\/td\u003e\n\u003ctd\u003eUSB-focused portable use\u003c\/td\u003e\n\u003ctd\u003eUSB and coaxial plus Bluetooth\u003c\/td\u003e\n\u003ctd\u003eUSB, optical\/coaxial and Bluetooth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSound shaping\u003c\/td\u003e\n\u003ctd\u003ePurist Current Mode presentation\u003c\/td\u003e\n\u003ctd\u003eApp and device settings\u003c\/td\u003e\n\u003ctd\u003eXBass II and XSpace analogue controls\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest choice when\u003c\/td\u003e\n\u003ctd\u003eYou prioritise Questyle’s amplifier topology and sound quality\u003c\/td\u003e\n\u003ctd\u003eYou want the broadest digital feature set and display\u003c\/td\u003e\n\u003ctd\u003eYou want wireless use and adjustable bass or spatial enhancement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Questyle","offers":[{"title":"Default Title","offer_id":44872305999965,"sku":"Questyle-SIGMA","price":549.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/DM_20260807131811_001.png?v=1786080125"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/collections\/questyle_c809e28e-07fc-4c7a-9a18-bce43fd15738.webp?v=1785553153","url":"https:\/\/emiuzek.com\/pt-br\/collections\/questyle.oembed","provider":"EMiUZEK","version":"1.0","type":"link"}