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Fiio FiiO TT13
FiiO TT13 Fully Automatic Bluetooth Vinyl Turntable with Built-in Phono Preamp Experience the soul of analog music with the convenience of modern technology. The FiiO TT13 is a precision-engineered fully automatic turntable that brings your record collection to life. Designed for both purity and flexibility, it features a built-in high-quality phono stage, making it a true "plug-and-play" solution for the modern home. Built-in Phono Preamp: Plug & Play Ready Integrated High-Gain Phono Stage The FiiO TT13 comes equipped with a built-in Phono EQ (Preamp). This allows you to connect the turntable directly to any active speakers, soundbars, or home theater receivers via standard RCA cables—no external amplifier box required. Switchable Output Modes For audiophiles who wish to upgrade their sound, the TT13 features a Phono/Line switch. You can easily bypass the internal preamp to use a high-end external phono stage, giving you the freedom to customize your audio signal chain as your hobby grows. Seamless Operation and Elegant Design Fully Automatic Start-Stop System Say goodbye to the anxiety of manual cueing. With just a single press, the tonearm gently lands on the record, and it automatically returns when the music ends. This protects your Audio-Technica stylus and vinyl from accidental wear and tear. High-Definition Bluetooth Wireless Enjoy the freedom of wireless HiFi. The TT13 supports high-quality Bluetooth transmission, allowing you to stream your vinyl’s rich analog sound directly to Bluetooth headphones or wireless speakers with remarkable clarity. Technical Specifications Feature Detailed Specification Phono Preamp Built-in (Switchable Phono/Line Output) Drive Type Belt Drive System Operation Fully Automatic (Start / Stop / Return) Cartridge High-performance Audio-Technica MM Connectivity Bluetooth (Wireless) / RCA Analog (Wired) Speed Support 33 1/3 RPM / 45 RPM Platter Material Professional Die-cast Aluminum Alloy Why the FiiO TT13 is the Perfect Choice Effortless Setup: Built-in phono preamp means fewer cables and no need for extra equipment to get started. Premium Audio-Technica Cartridge: Pre-installed and factory-aligned for immediate, high-fidelity tracking out of the box. Modern Minimalist Build: A sleek, vibration-dampening chassis that fits perfectly into any contemporary living space. Dual-Mode Listening: Switch between the intimacy of Bluetooth headphones and the room-filling sound of wired speakers. Frequently Asked Questions Do I need a separate amplifier to use the FiiO TT13? No. Because the TT13 has a built-in phono preamp, you can connect it directly to powered/active speakers. If you are using passive speakers, you will still need a standard home amplifier. Can I use my own external phono preamp? Yes. By switching the output toggle to "Phono" mode, the internal preamp is bypassed, allowing you to use any external phono stage of your choice.
$249.99 - $289.99
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Fiio FiiO K11 R2R
FiiO K11 R2R Desktop DAC and Headphone Amplifier Organic. Musical. Accessible. The FiiO K11 R2R breaks the barrier to high-end audio. By abandoning traditional DAC chips in favor of a discrete 24-bit R2R resistor array, this desktop unit delivers the uniquely warm, smooth, and natural sound signature that audiophiles crave—at a fraction of the usual cost. It is the perfect entry point into the world of "Analog Digital" audio. The Magic of R2R Architecture Fully Differential 24-Bit R2R Array Unlike standard DACs that use delta-sigma modulation, the K11 R2R employs FiiO's self-developed four-channel fully differential 24-bit resistor array. This consists of 48 precision resistors per channel (192 total) with 0.1% accuracy and low temperature drift. The result is a sound that feels more "real" and less "processed," with rich vocals and dense mids. NOS & OS Dual Modes Customize your sound with a simple toggle: NOS (Non-Oversampling) Mode: Preserves the original sampling rate for a raw, phase-perfect, and highly musical presentation. Preferred by purists for its organic timbre. OS (Oversampling) Mode: Upsamples audio to 384kHz for superior anti-aliasing and a smoother, more refined technical performance. Powerful and Precise 1300mW Balanced Output Despite its slim profile, the K11 R2R packs a punch. It delivers up to 1300mW per channel (at 32Ω) via the 4.4mm balanced output. This provides ample headroom to drive high-impedance headphones like the Sennheiser HD600 or planar magnetic models with authority and deep bass control. NJW1195A Electronic Volume Control To solve the common "scratchy pot" and channel imbalance issues of entry-level amps, the K11 R2R uses the audiophile-grade NJW1195A volume control chip. This ensures precise, low-noise volume adjustment and perfect left/right balance, even when listening at very low levels with sensitive IEMs. Technical Specifications Feature Detailed Specification DAC Architecture 4-Channel Fully Differential 24-bit R2R Resistor Array Max Output Power ≥1300mW + 1300mW (32Ω, Balanced) Sampling Support PCM 384kHz/24bit, DSD256 Operating Modes NOS (Non-Oversampling) / OS (Oversampling) Inputs USB Type-C, Optical, Coaxial Outputs 6.35mm SE, 4.4mm Balanced, RCA Line-Out Display VA LCD Screen (Integrated into Logo) Dimensions 147 x 133 x 32.3 mm (Slim Profile) Weight Approx. 420g Why Choose the K11 R2R? Distinctive Design: Features a minimalistic "Slim" chassis with a clever VA display hidden under the tempered glass top logo, showing sampling rates and volume. Three Gain Levels: High, Medium, and Low gain settings allow for perfect matching with both sensitive in-ear monitors and power-hungry over-ear headphones. RGB Ambient Light: The FiiO logo illuminates with customizable RGB colors, indicating the audio format (e.g., Cyan for PCM, Green for DSD). True Line-Out: Can be set to "LO" mode to bypass the volume control, acting as a pure R2R DAC for your active speakers or external amplifier. Frequently Asked Questions What is the difference between K11 (Standard) and K11 R2R? The Standard K11 uses a CS43198 chip for a clean, modern, and detailed sound. The K11 R2R uses a resistor array for a warmer, smoother, and more "analog" sound. If you prefer vocals and jazz, choose the R2R. If you prefer pop and fast electronic music, the Standard K11 might be better. Does it heat up? R2R circuits involve many resistors handling current, so the unit will run slightly warmer than chip-based DACs. This is normal and within safe operating limits. Can I use it with PS5? Yes. The K11 R2R supports UAC 1.0 mode, making it fully compatible with PS5 and Switch for an immersive gaming audio experience.
$175.99
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Fiio FiiO BR13
FiiO BR13 Hi-Res Bluetooth Receiver & DAC Breathe new life into your audio system. The FiiO BR13 is the ultimate solution for upgrading your traditional wired speakers, amplifiers, or older home theater systems. By adding high-resolution wireless connectivity, the BR13 allows you to stream music from your phone or tablet to your premium speakers with uncompromising quality. It is more than just a receiver; it is a dedicated audio processing center for your home. High-End Wireless Architecture Qualcomm QCC5125 & LDAC Support Wireless doesn't mean low quality. The BR13 is powered by the Qualcomm QCC5125 Bluetooth 5.1 chip, supporting all major high-resolution codecs including LDAC, aptX HD, and aptX Adaptive. This ensures stable, low-latency transmission with sound quality that rivals wired connections. Dedicated ES9018K2M DAC Unlike cheap adapters that use integrated Bluetooth DACs, the BR13 features a dedicated ESS ES9018K2M DAC chip. Coupled with the TPA1882 operational amplifier, it delivers a clean, dynamic analog signal with low noise, ensuring your Hi-Fi system performs at its best. Visual Control & Exclusive Tech High-Contrast VA Display Stop guessing your connection status. The BR13 features a rare-in-class VA display screen. See exactly which codec (e.g., LDAC) is active, the current sampling rate, and EQ settings at a glance. Global Upsampling Technology Experience enhanced clarity. The BR13 features FiiO’s proprietary Global Upsampling technology. It can automatically upsample low-resolution audio signals to 96kHz/24bit, restoring detail and airiness to your music before outputting it to your system. 3-in-1 Versatility The BR13 handles more than just Bluetooth. It supports three distinct modes: Bluetooth Receiver (RX): Stream from phone to speakers. USB DAC: Connect to a computer via USB-C to act as an external sound card. SPDIF Conversion: Connect a TV or CD player via Optical/Coaxial Input, and output to analog speakers (DAC mode) or bypass to digital outputs. Technical Specifications Feature Detailed Specification Bluetooth Chip Qualcomm QCC5125 (Bluetooth 5.1) DAC Chipset ESS ES9018K2M Op-Amp TPA1882 Supported Codecs LDAC, aptX HD, aptX Adaptive, aptX, AAC, SBC Inputs Bluetooth, USB-C, Optical In, Coaxial In Outputs RCA Line-Out, Optical Out, Coaxial Out Display Custom VA Screen Upsampling Up to 96kHz/24bit Power Input USB-C (5V) Why Choose the FiiO BR13? 7 Preset EQs: Choose from Pop, Classical, Jazz, and more, or customize your own parametric EQ (PEQ) via the FiiO Control App. Game Mode: Supports aptX Low Latency (LL) and a dedicated low-latency mode in the app, making it great for gaming setups. Dual-Device Connection: Can connect to two Bluetooth devices simultaneously, allowing you to switch playback between your phone and tablet seamlessly. Aluminum Build: Features a compact, durable aluminum alloy body with an angled front panel for easy viewing on a desktop. Frequently Asked Questions Does the BR13 transmit Bluetooth (TX)? No. The BR13 is a Receiver (RX) only. It receives audio from your phone and plays it through wired speakers. It cannot transmit audio from a TV to Bluetooth headphones (for that, you need the FiiO BTA30 Pro). Can I connect it to my active speakers? Yes. Use the RCA Line-Out ports on the back of the BR13 to connect directly to your active speakers (like FiiO SP3 or Audioengine). Does it need a driver for PC use? For USB DAC mode, it supports UAC 1.0, which is plug-and-play for Windows, Mac, PS5, and Switch. No complex driver installation is required. Need Multi-Room Audio? If you prefer Wi-Fi streaming over Bluetooth, check out the WiiM Mini Streamer for AirPlay 2 and Spotify Connect support.
$64.65
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IEAST iEAST AMP-i50Bv2
DescriptioniEAST AMP-i50Bv2 is a compact wall-mount streaming amplifier designed to drive passive speakers in whole-home and custom-install audio systems. More than 50W per channel into 4Ω, multiple local inputs, subwoofer output and centralized control interfaces make it a practical single-zone building block.Why it stands outWall-mount streaming amplifierCombines network playback and speaker amplification in a slim chassis suited to concealed installations.Useful power for installed speakersProvides more than 50W/channel into 4Ω and more than 30W/channel into 8Ω under official test conditions.Local source and subwoofer integrationAUX, coaxial and USB playback inputs support additional sources while the mono output connects a powered subwoofer.Custom-control connectivityEthernet, RS232, TCP/IP and infrared support integration beyond basic app control.Best for Ceiling and in-wall speaker systems Whole-home background music Wall-mounted custom installations TV systems using compatible stereo coaxial audio Multi-room iEAST systems Not ideal for Users requiring HDMI ARC Passive subwoofers Very demanding low-impedance speakers Headphone-focused listening EMiUZEK Buying Notes AMP-i50Bv2 can directly drive compatible passive speakers. The subwoofer output is line level and requires an active subwoofer. Set televisions and digital sources to two-channel PCM before using the coaxial input. Frequently asked questionsCan it drive passive speakers?Yes, it supports compatible 4Ω and 8Ω passive speakers.Does it have a subwoofer output?Yes, for an active/powered subwoofer.Can it connect to a TV?Yes through compatible AUX or coaxial stereo PCM output; it has no HDMI ARC.Does it support Ethernet?Yes, 10/100 Ethernet is provided.Can it play from USB storage?Yes, the USB port supports music playback.Does it support AirPlay 2?Official specifications list AirPlay, not AirPlay 2.HOW TO CONNECTInstalled speaker zoneSource: Streaming servicesConnection: Wi-Fi or EthernetOutput connection: Speaker outputTarget: Passive ceiling/in-wall speakersTV audio systemSource: TelevisionConnection: Coaxial PCM or AUXOutput connection: Speaker outputTarget: Passive speakers2.1 room systemSource: Network or local sourceConnection: Wi-Fi, Bluetooth, AUX or coaxialOutput connection: Speaker output + sub outTarget: Passive speakers + active subwooferTechnical Specifications Feature Specification Product type Wall-mount wireless multi-room stereo amplifier Power into 4Ω >50W/channel at 1% THD+N Power into 8Ω >30W/channel at 1% THD+N Inputs 2.4GHz Wi-Fi, Bluetooth 5.0, AUX, coaxial, USB playback Network 10/100 Ethernet Outputs Stereo speaker output; active-subwoofer output DAC ESS9023 Streaming DLNA, AirPlay, Spotify Connect, QPlay Control TCP/IP, RS232, infrared Power 24V/3.3A Dimensions 223 × 189 × 32mm with antenna Weight 0.5kg Additional Product Content📊 Comparison: Which iEAST Installation Amplifier Is Right for You?Choose AMP-i50Bv2 for wall-mounted multi-room systems with source inputs and subwoofer integration; choose AMP-i20 for smaller background-audio zones, or AMP80 for a compact shelf-mounted high-power system. Feature AMP-i20 AMP-i50Bv2 AMP80 Primary use Small background zones Wall-mounted custom installation Compact high-power stereo Power into 4Ω 2 × 20W >50W/channel 2 × 80W Source inputs Streaming/Bluetooth AUX, coaxial, USB AUX, coaxial Subwoofer output No Yes Yes Control integration TCP/IP RS232, TCP/IP, IR TCP/IP, IR
$599.00 $299.00
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Fosi Audio Fosi Audio DS2
DescriptionFosi Audio DS2 (2024) is a portable USB DAC and headphone amplifier for mobile devices and computers.Dual CS43131 DACs, independent volume control and 3.5mm plus 4.4mm outputs deliver clean, powerful wired headphone playback in a compact dongle.Why it stands outDual CS43131 DAC architectureThe current 2024 version uses two Cirrus Logic DAC chips for low-noise conversion.Strong balanced outputThe 4.4mm output provides substantially more power than the single-ended connection.Independent hardware volumeDedicated buttons allow finer adjustment without relying only on the source device.High-resolution playbackSupports PCM up to 32-bit/384kHz and DSD256.Best for USB-C phone and tablet listening Windows and Mac headphone systems Sensitive IEMs and full-size wired headphones Users needing 3.5mm and 4.4mm outputs Not ideal for Bluetooth or wireless headphones Headsets requiring microphone support Users expecting an internal battery EMiUZEK Buying Notes This listing is for the DS2 2024 version with dual CS43131 DACs; older DS2 specifications do not apply. DS2 draws power from the connected source and can feel warm during normal operation. Lightning devices require a compatible Lightning-to-USB-C OTG cable that may be sold separately. Frequently asked questionsWhich DAC chips are used?The current DS2 2024 uses dual CS43131 DACs.What is the maximum resolution?PCM up to 32-bit/384kHz and DSD256.Does it have a battery?No. It is powered by the connected USB device.Can it drive 4.4mm balanced headphones?Yes, with compatible balanced-wired headphones.Can I use a 3.5mm-to-4.4mm adapter?No. Use headphones terminated correctly for the selected output.Why does it feel warm?A moderate temperature rise is normal during high-resolution or higher-output operation.HOW TO CONNECTUSB-C phone listeningSource icon: phoneSource: USB-C phone / tabletConnection: USB-C audioOutput connection: 3.5mm outputTarget icon: headphonesOutput: Wired headphones or IEMsBalanced portable listeningSource icon: phoneSource: USB-C phone / playerConnection: USB-C audioOutput connection: 4.4mm balanced outputTarget icon: headphonesOutput: Balanced headphonesComputer headphone systemSource icon: computerSource: Windows PC / MacConnection: USB audioOutput connection: 3.5mm or 4.4mm outputTarget icon: headphonesOutput: Wired headphonesTechnical SpecificationsAudio architecture Feature Specification Product type Portable USB DAC and headphone amplifier DAC chipset Dual CS43131 Maximum PCM 32-bit / 384kHz DSD DSD64 / 128 / 256 Outputs and performance Feature Specification Headphone outputs 3.5mm single-ended; 4.4mm balanced Output power 128mW @ 32Ω single-ended; 170mW @ 32Ω balanced Recommended impedance 16–300Ω SNR ≥130dB THD+N <0.0002% Additional Product ContentComparison: Which Fosi Audio model is right for you? Model DS1 DS2 2024 DS3 Primary use Portable Hi-Res music Portable Hi-Res music Music and gaming spatial audio DAC / processing ESS ES9038Q2M Dual CS43131 Hardware 7.1 processing Maximum PCM 32-bit / 768kHz 32-bit / 384kHz 32-bit / 768kHz Maximum DSD DSD512 DSD256 DSD512 Maximum stated output 220mW @ 32Ω balanced 510mW @ 32Ω balanced (manual) 220mW @ 32Ω Best use Compact ESS dongle Higher-power balanced portable setup Gaming effects and spatial audio
$59.90
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IEAST iEAST AMP80
DescriptioniEAST AMP80 is a compact high-power network streaming amplifier that directly drives passive speakers and integrates a powered subwoofer. With 2 × 80W into 4Ω, wired and wireless streaming, Bluetooth, analog and coaxial inputs, it is suited to stronger two-channel and 2.1 systems.Why it stands out2 × 80W compact speaker powerProvides substantially more output than entry-level mini streaming amplifiers.Integrated 2.1 system supportStereo speaker outputs and a dedicated line-level subwoofer output simplify a compact 2.1 setup.Three network and wireless pathsWi-Fi, Ethernet and Bluetooth accommodate convenient or installation-grade connectivity.Useful local source inputsAnalog and coaxial inputs add televisions, disc players and other stereo sources.Best for Bookshelf and floorstanding speaker systems 2.1 living-room audio Higher-output multi-room zones TV audio through stereo coaxial output Users replacing separate streamer and amplifier Not ideal for Users requiring HDMI ARC Passive subwoofers Balanced XLR systems Headphone listening EMiUZEK Buying Notes AMP80 directly drives compatible 4Ω/8Ω passive speakers. Sub out requires a powered subwoofer. For TV connection, use stereo PCM from a compatible coaxial or analog output. Frequently asked questionsCan it drive passive speakers?Yes, with 2 × 80W into 4Ω and 2 × 65W into 8Ω under official conditions.Can it connect a subwoofer?Yes, connect an active subwoofer to SUB OUT.Does it have HDMI ARC?No.Does it support Bluetooth?Yes, Bluetooth 5.0 SBC.Can it use Ethernet?Yes, 10/100 Ethernet is supported.Can it connect to a TV?Yes through compatible analog or coaxial stereo PCM output.HOW TO CONNECTStereo speaker systemSource: Streaming servicesConnection: Wi-Fi or EthernetOutput connection: Speaker outputTarget: Passive speakers2.1 systemSource: Network or local sourceConnection: Wi-Fi, Bluetooth, AUX or coaxialOutput connection: Speaker output + sub outTarget: Passive speakers + active subwooferTV audio systemSource: TelevisionConnection: Coaxial PCM or AUXOutput connection: Speaker outputTarget: Passive speakersTechnical Specifications Feature Specification Product type Wireless multi-room stereo amplifier Power into 4Ω 2 × 80W at 1% THD+N Power into 8Ω 2 × 65W at 1% THD+N Inputs 2.4GHz Wi-Fi, Bluetooth 5.0, AUX, coaxial Network 10/100 Ethernet Outputs Stereo speaker output; active-subwoofer output DAC ESS9023 Streaming DLNA, AirPlay, Spotify Connect, QPlay SNR 90dB THD+N <0.1% Power 32V/4.75A Dimensions 136 × 134.8 × 40mm Weight 0.32kg Additional Product Content📊 Comparison: Which iEAST Streaming Amplifier Is Right for You?Choose AMP80 for compact high-output 2.1 audio; choose AMP50 for lower-cost flexible stereo, or eAMP 2 Pro for reference power, dual-band networking and rack integration. Feature AudioCast AMP50 iEAST AMP80 iEAST eAMP 2 Pro Power 2 × 50W/4Ω 2 × 80W/4Ω 2 × 150W/8Ω Subwoofer output No dedicated output Yes Yes Wi-Fi 2.4GHz 2.4GHz Dual-band Wi-Fi 5 Rack/custom control Basic integration TCP/IP/IR 1U, RS232, triggers, IR Best use Flexible compact stereo Powerful compact 2.1 High-end custom installation
$199.00
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Fosi Audio Fosi Audio K5 Pro
DescriptionFosi Audio K5 Pro is a compact gaming DAC and headphone amplifier with USB, optical and coaxial digital inputs.A microphone input, RCA output, tone controls and strong 3.5mm headphone amplification provide one control point for PC, console and desktop audio.Why it stands outGaming microphone supportA dedicated 3.5mm microphone input supports compatible PC and console communication setups.Three digital source inputsSwitch between USB-C, optical and coaxial sources.Powerful headphone outputSupports 16–300Ω headphones with up to 500mW at 32Ω.Headphone and speaker integrationUse the 3.5mm headphone output or RCA output for powered speakers and amplifiers.Best for PC and console gaming Desktop headphones and powered speakers TVs with optical PCM output Users wanting physical bass and treble controls Not ideal for High-resolution playback above 24-bit/192kHz Balanced headphone connections Passive speakers without a power amplifier EMiUZEK Buying Notes The microphone function works in USB mode and is not available from optical or coaxial inputs. USB playback is limited to 24-bit/96kHz; optical and coaxial support up to 24-bit/192kHz. K5 Pro does not power passive speakers directly; connect RCA to powered speakers or an amplifier. Frequently asked questionsCan it be used with PS5?Yes, through a compatible USB connection and system audio settings.Does the microphone work with optical input?No. Microphone support is for USB mode.Can it drive 300Ω headphones?Yes, the official recommended range is 16–300Ω.Can it connect to powered speakers?Yes, through RCA output.Does it support balanced headphones?No. The headphone output is 3.5mm single-ended.Can it decode Dolby or DTS from a TV?Use PCM output; multichannel encoded formats are not supported.HOW TO CONNECTPC gamingSource icon: computerSource: PC / MacConnection: USB-C audio + microphoneOutput connection: 3.5mm headphone outputTarget icon: headphonesOutput: Gaming headset / headphonesConsole gamingSource icon: deviceSource: Compatible consoleConnection: USB audioOutput connection: 3.5mm headphone outputTarget icon: headphonesOutput: Gaming headset / headphonesTV and speaker systemSource icon: tvSource: TVConnection: Optical PCMOutput connection: RCA outputTarget icon: speakersOutput: Powered speakers or amplifierTechnical SpecificationsInputs and outputs Feature Specification Inputs USB-C; optical; coaxial; 3.5mm microphone Outputs 3.5mm headphone; RCA line output Recommended headphone impedance 16–300Ω Digital and headphone performance Feature Specification USB maximum 24-bit / 96kHz Optical/coaxial maximum 24-bit / 192kHz Output power 1000mW @ 16Ω; 500mW @ 32Ω; 300mW @ 64Ω; 150mW @ 128Ω; 80mW @ 300Ω SNR ≥110dB THD ≤0.003% Power input DC 5V via USB-C Additional Product ContentComparison: Which Fosi Audio model is right for you? Model K5 Pro Q4 K7 Primary use Gaming DAC with microphone Simple desktop DAC/headphone amp Premium HiFi and gaming DAC Inputs USB, optical, coaxial, microphone USB, optical, coaxial USB, optical, coaxial, Bluetooth, microphone Headphone output 3.5mm 3.5mm 3.5mm and 4.4mm balanced Maximum USB playback 24-bit / 96kHz 24-bit / 96kHz 32-bit / 384kHz; DSD256 Best use Budget gaming communication Basic music and TV upgrade High-output balanced desktop system
$75.00
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Fosi Audio Fosi Audio SK02
DescriptionFosi Audio SK02 is a compact desktop USB and optical DAC/headphone amplifier with 3.5mm and 4.4mm headphone outputs.An ES9038Q2M DAC, PCM 32-bit/384kHz and DSD256 decoding plus up to 755mW at 32Ω provide a capable all-in-one source for wired headphones and line-output systems.Why it stands outHi-res desktop DACES9038Q2M conversion supports PCM 384kHz and DSD256 over USB.Dual headphone outputs3.5mm single-ended and 4.4mm outputs support a wider range of headphone cables.Strong 4.4mm driveUp to 755mW at 32Ω provides useful power for many full-size headphones.DAC, headphone amp and pre-outThe 3.5mm line output can feed powered speakers or an external amplifier.Best for Desktop wired headphone systems PC and Mac high-resolution audio Users with 4.4mm headphone cables DAC/preamp use with powered speakers or an amplifier Not ideal for Analog source input Bluetooth wireless playback Microphone or gaming-chat input EMiUZEK Buying Notes SK02 accepts USB and optical digital inputs only; it has no analog input. The 4.4mm connection is for headphones; verify cable termination before use. Its 3.5mm output can operate as line out, while optical can also be passed out for a downstream DAC. Frequently asked questionsCan I connect an analog source?No. Inputs are USB and optical digital audio.Does it support balanced headphones?It provides a 4.4mm headphone output; use a correctly terminated compatible cable.Can it feed powered speakers?Yes. Use the 3.5mm line output.Can it drive passive speakers?No. Add a power amplifier.What is the USB maximum?PCM 32-bit/384kHz and DSD256 from compatible software and sources.Can it output optical audio?Yes. The shared optical connection supports optical output for compatible downstream equipment.HOW TO CONNECTComputer headphonesSource: PC or MacConnection: USB-C audioOutput: 3.5mm or 4.4mm headphoneTarget: 16–300Ω headphonesNote: Select the correct gain and output mode.TV headphonesSource: TV or consoleConnection: Optical PCMOutput: Headphone outputTarget: Wired headphonesNote: Set the source to PCM stereo.Powered speakersSource: Computer or optical sourceConnection: USB or opticalOutput: 3.5mm line outTarget: Powered speakers or amplifierNote: Use line-out mode and manage system volume safely.Technical SpecificationsAudio performance Feature Specification DAC chip ESS ES9038Q2M USB maximum PCM 32-bit / 384kHz; DSD256 Optical maximum 24-bit / 192kHz Headphone impedance 16–300Ω 3.5mm output 190mW at 32Ω 4.4mm output 755mW at 32Ω THD ≤0.001% at 1kHz Connections and physical Feature Specification Inputs USB, optical Outputs 3.5mm headphone, 4.4mm headphone, 3.5mm line out / optical out Frequency response 20Hz–20kHz (±0.02dB) Power 5V USB-C Dimensions 121 × 51 × 43mm Weight 380g Recommended System Setup Setup Connection Computer headphones Computer → USB → SK02 → Headphones TV headphones TV optical PCM → SK02 → Headphones Powered speakers Digital source → SK02 line out → Powered speakers Additional Product ContentFosi Audio product comparisonCompare the models by the differences that most affect system matching and everyday use. Feature SK02 SK01 Q4 Product position Hi-res desktop DAC/amp Analog headphone amp/preamp Entry DAC/amp with tone controls DAC chip ES9038Q2M No DAC 97220-based chipset Main inputs USB, optical 3.5mm analog USB, optical, coaxial USB maximum 32-bit / 384kHz, DSD256 No USB audio 24-bit / 96kHz Headphone outputs 3.5mm, 4.4mm 3.5mm, 6.35mm 3.5mm Maximum output at 32Ω 755mW via 4.4mm 2400mW high gain 100mW Analog line output 3.5mm 3.5mm RCA Tone controls No Three-band Bass and treble Battery operation No Yes No Best use Hi-res desktop headphones Powerful analog amplification Simple PC/TV audio
$116.99
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Fosi Audio Fosi Audio PH05
DescriptionFosi Audio PH05 is a one-input, five-output headphone distribution amplifier for sharing one stereo source with up to five listeners.Five independently adjustable 310mW channels, master volume and one-touch mute make it useful for group listening, teaching, podcasting and headphone comparison.Why it stands outFive independent headphone channelsEach 3.5mm output has its own level control for different listeners and headphone sensitivities.310mW per channelAll five outputs provide rated power of 310mW at 32Ω for 16–300Ω headphones.Master control and instant muteA large master volume knob and one-touch mute simplify group control.Low-noise distribution designNE5532 amplification, 105dB SNR and 0.001% THD preserve a clean shared signal.Best for Group listening sessions Studio or podcast headphone monitoring Teaching and language labs Comparing several headphones from one source Not ideal for Combining several sources into one output Headsets requiring microphone pass-through Passive speakers or speaker-level amplification EMiUZEK Buying Notes PH05 is one input to five outputs; it cannot work in reverse as a five-input mixer. All outputs are stereo 3.5mm headphone connections and do not carry microphone signals. Set master and channel volumes low before connecting headphones. Frequently asked questionsCan it accept five sources?No. PH05 distributes one stereo input to five headphone outputs.Can each listener set a different volume?Yes. Each output has an independent level control.Does it support headset microphones?No. It carries stereo playback audio only.Can it drive passive speakers?No. It is a headphone amplifier, not a speaker power amplifier.What headphones are supported?Fosi specifies 16–300Ω headphones.Can all five outputs be muted together?Yes. Use the one-touch mute function.HOW TO CONNECTGroup listeningSource: Phone, DAC, mixer or audio interfaceConnection: 3.5mm AUXOutput: Five 3.5mm outputsTarget: Up to five headphonesNote: Start with all channel levels low.Studio monitoringSource: Mixer or audio interfaceConnection: 3.5mm stereo lineOutput: Five headphone outputsTarget: Performers or reviewersNote: Use independent controls for each listener.Headphone comparisonSource: Single DAC or playerConnection: 3.5mm AUXOutput: Selected headphone outputsTarget: Multiple headphonesNote: Level-match carefully before comparing.Technical SpecificationsAudio performance Feature Specification Rated output 310mW × 5 at 32Ω Headphone impedance 16–300Ω SNR / Dynamic range 105dB / 105dB THD 0.001% SINAD / Crosstalk 90dB / 90dB Frequency response 20Hz–20kHz (±0.5dB) Connections and power Feature Specification Input 3.5mm AUX × 1 Outputs 3.5mm headphone × 5 Op-amp TI NE5532 Power DC 12V / 1A Recommended System Setup Setup Connection Group session Source → PH05 → Up to five headphones Studio Audio interface → PH05 → Performers' headphones Comparison DAC → PH05 → Multiple headphones Additional Product ContentFosi Audio product comparisonCompare the models by the differences that most affect system matching and everyday use. Feature PH05 PH04 Product position Five-channel headphone distributor Four-channel headphone distributor Inputs 1 × 3.5mm stereo 1 × 3.5mm stereo Headphone outputs 5 × 3.5mm 4 × 3.5mm Independent volume Five channels Four channels Output power 310mW per channel at 32Ω 40mW at 100Ω Supported impedance 16–300Ω Application dependent Master volume Yes Yes One-touch mute Yes No Microphone support No No Best use Five-listener monitoring Basic four-listener distribution
$49.90
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Fosi Audio Fosi Audio T20X
DescriptionFosi Audio T20X is a Bluetooth vacuum-tube integrated amplifier for passive speakers and wired headphones.Its upgraded 100W x2 output, replaceable tubes and bass/treble controls create a compact all-in-one amplifier for desktop and bookshelf systems. Why it stands outFour reasons this product deserves a place in a well-planned audio system.100W x2 Maximum OutputThe Class D power stage provides more headroom than the T20 for compatible passive speakers.Replaceable Tube StageTube rolling lets experienced users experiment with compatible tube options.Two Listening OutputsDrive passive speakers or use the 3.5mm headphone connection from the same amplifier.Simple Wireless and Analog PlaybackBluetooth and analog input cover the most common phone, streamer and DAC setups without a complex interface. Best for Bookshelf passive-speaker systems Bluetooth desktop audio Combined speaker and headphone listening Listeners wanting tube character with higher output than the T20 Not ideal for Users requiring optical, USB or HDMI audio Balanced XLR systems Turntables without phono amplification Systems needing a dedicated subwoofer output EMiUZEK Buying Notes T20X is an integrated amplifier and can directly drive compatible 2–8Ω passive speakers. Its analog input is line level; use a phono preamp with a conventional turntable. The maximum output figure depends on speaker impedance, supply voltage and test conditions. Frequently Asked QuestionsCan the T20X drive passive speakers?Yes. It is an integrated amplifier with passive-speaker outputs.Can it connect to a turntable?Yes when the turntable has a built-in phono preamp or an external phono preamp is used.Does it include a headphone output?Yes, a 3.5mm wired headphone output is provided.Does it support optical or USB audio?No. Use Bluetooth or the analog input.Can the vacuum tubes be replaced?Yes. Use compatible tubes and switch the amplifier off before tube replacement.Can I connect an active subwoofer?No dedicated subwoofer output is specified; use a compatible system-level integration method. HOW TO CONNECTBluetooth stereoSource: Phone / tabletConnection: BluetoothOutput: Speaker terminalsTarget: Passive speakersNote: Keep initial volume low when pairing.Wired HiFiSource: Streamer / DAC / CD playerConnection: Analog line inputOutput: Speaker terminalsTarget: Passive speakersNote: Use a line-level source.Headphone systemSource: Bluetooth or analog sourceConnection: Bluetooth / line inputOutput: 3.5mm headphone outputTarget: Wired headphonesNote: Disconnect or lower speaker listening as appropriate. Technical SpecificationsAmplifier Feature Specification Product Type Bluetooth tube integrated amplifier Amplifier Chip TI TPA3221 Maximum Output 100W x2 at 4Ω Speaker Impedance 2–8Ω Audio Feature Specification Frequency Response 20Hz–20kHz (±1dB) THD ≤0.3% SNR ≥86dB Input Sensitivity ≤650mV Connectivity and Power Feature Specification Inputs Bluetooth; analog line input Outputs Passive speaker terminals; 3.5mm headphone Power Supply 24V/4.5A included DC Input Range 12–30V Recommended System Setup Setup Connection Wireless speaker system Phone → Bluetooth → T20X → passive speakers Wired stereo Streamer/DAC → line input → T20X → passive speakers Headphones Source → T20X → 3.5mm headphones Additional Product Content Feature T20X T20 P3 Product Position Higher-power tube integrated amp Compact tube integrated amp Tube preamp / headphone amp Passive Speaker Amplifier Yes Yes No Maximum Speaker Output 100W x2 at 4Ω 50W x2 at 4Ω Not applicable Inputs Bluetooth, line input Bluetooth 5.0, RCA Bluetooth, RCA Headphone Output 3.5mm 3.5mm 3.5mm Tone Controls Bass, treble Bass, treble Bass, treble Tube Rolling Compatible tubes Compatible tubes Compatible tubes Best Use More speaker headroom Compact speaker system Existing amplifier / active speakers
$99.90
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Fosi Audio Fosi Audio T20
DescriptionFosi Audio T20 is a compact Bluetooth tube integrated amplifier for passive speakers and wired headphones.It combines 50W x2 Class D speaker power with replaceable vacuum tubes, RCA input and tone controls for a warm, flexible desktop stereo system. Why it stands outFour reasons this product deserves a place in a well-planned audio system.Tube-Buffered SoundReplaceable vacuum tubes add the tube stage and allow compatible tube rolling.Speaker and Headphone ListeningThe T20 powers passive speakers and also provides a front 3.5mm headphone output.Bluetooth and RCA InputsSwitch between convenient wireless playback and a conventional analog source.Compact Tone ControlIndependent bass and treble controls make it easier to adapt the system to speakers, headphones and room acoustics. Best for Desktop passive-speaker systems Bluetooth music playback Headphone and speaker listening from one compact amplifier Listeners interested in compatible tube rolling Not ideal for Users requiring optical, USB or HDMI inputs Balanced XLR audio systems Turntables without a built-in or external phono preamp Users needing a dedicated subwoofer output EMiUZEK Buying Notes T20 is an integrated speaker amplifier and can directly drive compatible 4–8Ω passive speakers. Its RCA input is line level; a conventional turntable requires a separate phono preamplifier. The 3.5mm jack is a headphone output, not a microphone connection. Frequently Asked QuestionsCan the T20 drive passive speakers directly?Yes. Connect a compatible 4–8Ω passive speaker pair to the rear speaker terminals.Can I connect a turntable?Yes only when the turntable has a built-in phono preamp or is used with an external phono preamp.Does it work as a headphone amplifier?Yes, it includes a front 3.5mm headphone output.Does it accept digital audio?No. Inputs are Bluetooth and analog RCA; optical and USB audio are not provided.Can the tubes be replaced?Yes. Use only compatible tube types and power the unit off before replacement.Does it have a subwoofer output?No dedicated subwoofer output is specified. Use a subwoofer integration method supported by your wider system. HOW TO CONNECTBluetooth speaker systemSource: Phone / tabletConnection: BluetoothOutput: Speaker terminalsTarget: Passive speakersNote: Pair the source and set volume low before playback.Wired stereo systemSource: DAC / streamer / CD playerConnection: RCA line inputOutput: Speaker terminalsTarget: Passive speakersNote: Use a fixed or controlled line-level source.Headphone listeningSource: Phone via Bluetooth or RCA sourceConnection: Bluetooth / RCAOutput: 3.5mm headphone outputTarget: Wired headphonesNote: Lower volume before inserting headphones. Technical SpecificationsAmplifier Feature Specification Product Type Bluetooth tube integrated amplifier Amplifier Chip TI TPA3116 Maximum Speaker Output 50W x2 at 4Ω Speaker Impedance 4–8Ω Connectivity Feature Specification Inputs Bluetooth 5.0; RCA line input Outputs Passive speaker terminals; 3.5mm headphone Tone Controls Bass and treble Audio Feature Specification Vacuum Tubes Replaceable 6K4 pair Frequency Response 20Hz–20kHz (±1.5dB) THD ≤0.04% SNR ≥99dB Recommended System Setup Setup Connection Wireless stereo Phone → Bluetooth → T20 → passive speakers Wired stereo Streamer/DAC → RCA → T20 → passive speakers Headphones Source → T20 → 3.5mm headphones Additional Product Content Feature T20 T20X P3 Product Position 50W x2 tube integrated amp 100W x2 tube integrated amp Tube preamp / headphone amp Passive Speaker Amplifier Yes Yes No Inputs Bluetooth 5.0, RCA Bluetooth, AUX Bluetooth, RCA Speaker Output 50W x2 max at 4Ω 100W x2 max at 4Ω None Headphone Output 3.5mm 3.5mm 3.5mm Tone Controls Bass, treble Bass, treble Bass, treble Tube Rolling Compatible tubes Compatible tubes Compatible tubes Best Use Compact speaker/headphone system Higher-power speaker system Add tube preamp/headphone stage
$89.90
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Fosi Audio Fosi Audio HT4S
DescriptionFosi Audio HT4S is a compact 4.1/5.0-channel integrated amplifier for multi-speaker, outdoor-audio and simulator systems.Bluetooth, optical and 3.5mm inputs, five amplified channels and a switchable sub/center channel create a flexible multi-speaker system without a full-size AV receiver.Why it stands outSwitchable 4.1 or 5.0 operationConfigure four main speakers plus a subwoofer channel, or use five full-range speaker channels.Built-in multi-channel powerProvides four 30W channels plus a 60W sub channel in 4.1 mode, or five 30W channels in 5.0 mode.Digital and wireless inputsConnect optical PCM, 3.5mm analog or Bluetooth sources.Remote and front-panel controlAdjust source, volume, tone and operation without a separate controller.Best for Outdoor and patio multi-speaker systems Sim-racing bass-shaker installations Compact 4.1 or 5.0 speaker systems TV systems with optical PCM output Not ideal for Dolby or DTS surround decoding Systems requiring HDMI ARC Speakers below the specified 4Ω minimum EMiUZEK Buying Notes HT4S is a multi-channel amplifier, not an HDMI adapter or surround-sound decoder. Set the source to PCM stereo when using optical; encoded Dolby/DTS signals are not supported. The SUB/CEN output changes function with the selected mode, so confirm the switch setting before connecting speakers. Frequently asked questionsDoes HT4S have HDMI?No. Inputs are Bluetooth, optical and 3.5mm AUX.Does it decode Dolby or DTS?No. Use a compatible PCM signal.Can it run five passive speakers?Yes, in 5.0 mode with compatible 4–8Ω speakers.Can it power a passive subwoofer?Yes, in 4.1 mode through the dedicated amplified SUB/CEN channel.Does it have a line output?Yes, a 3.5mm pre-out is provided.Can it be used outdoors?It can power outdoor speakers, but the amplifier itself should remain protected indoors.HOW TO CONNECTOptical TV systemSource icon: tvSource: TV / projectorConnection: Optical PCMOutput connection: Speaker terminalsTarget icon: speakersOutput: Four or five passive speakersOutdoor multi-speaker systemSource icon: phoneSource: Phone / streamerConnection: Bluetooth or AUXOutput connection: Speaker terminalsTarget icon: speakersOutput: Outdoor passive speakersSim-racing systemSource icon: computerSource: PC / simulator audioConnection: Optical, AUX or BluetoothOutput connection: Speaker and SUB/CEN outputsTarget icon: speakersOutput: Speakers and compatible bass shaker / passive subwooferTechnical SpecificationsConnections Feature Specification Inputs Bluetooth; optical; 3.5mm AUX Outputs Five speaker channels; 3.5mm pre-out Speaker impedance 4–8Ω Amplification and physical Feature Specification 4.1 rated output 30W × 4 + 60W × 1 @ 4Ω 5.0 rated output 30W × 5 Maximum output 50W × 5 @ 4Ω SNR ≥88dB THD ≤0.03% AC input 110–240V Dimensions 6.1 × 7.2 × 2 in Additional Product ContentComparison: Which Fosi Audio model is right for you? Model HT4S BT30D BT30D Pro System type 4.1 / 5.0 multi-speaker 2.1 stereo Higher-output 2.1 stereo Digital input Optical None None Amplified outputs Up to five channels Stereo + passive subwoofer Stereo + passive subwoofer Maximum stated output 50W × 5 @ 4Ω 50W × 2 + 100W 165W × 2 + 350W @ 4Ω Best use Outdoor, sim racing, multi-speaker Compact moderate-output 2.1 Higher-output 2.1
$140.39
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Fosi Audio Fosi Audio P3
DescriptionFosi Audio P3 is a compact tube preamplifier and headphone amplifier with RCA and Bluetooth 5.1 source inputs.Replaceable 5654W tubes, aptX-family Bluetooth codecs, bass and treble controls and outputs for headphones, amplifiers and powered speakers make it a versatile analog control stage.Why it stands outTube preamplifier characterA true tube stage adds adjustable tube character between line-level sources and the rest of the audio system.Wireless and wired inputsBluetooth 5.1 with Qualcomm QCC3031 and RCA input support convenient source switching.Headphone and system outputsA 3.5mm headphone jack, RCA output and AUX output support personal listening and downstream components.Hands-on tone controlFront bass and treble controls help adapt sound to headphones, speakers and room conditions.Best for Adding Bluetooth and tube character to a power amplifier Desktop wired headphone listening Active speaker systems needing volume and tone control Users interested in replaceable tube tuning Not ideal for Driving passive speakers directly Turntables without a phono preamp Systems requiring USB, optical or coaxial digital inputs EMiUZEK Buying Notes P3 is a preamplifier/headphone amplifier, not a speaker power amplifier. Its RCA input is line level; a standard turntable needs a phono preamp. RCA and AUX are downstream outputs, while the front 3.5mm jack is for headphones. Frequently asked questionsCan P3 drive passive speakers?No. Connect it to a separate power amplifier or powered speakers.Can I use wired headphones?Yes. It supports 16–300Ω headphones through the front 3.5mm output.Does it accept digital inputs?Bluetooth is supported, but there is no USB, optical or coaxial input.Can I connect a turntable?Only through a built-in or external phono preamp before the RCA input.Can I connect an active subwoofer?The AUX or RCA line output can feed compatible downstream equipment; confirm the subwoofer's input and system gain arrangement.Are the tubes replaceable?Yes. The supplied 5654W tubes are replaceable with compatible tube types.HOW TO CONNECTPower amplifier systemSource: Streamer, DAC or Bluetooth deviceConnection: RCA or BluetoothOutput: RCA outputTarget: Power amplifier → passive speakersNote: P3 controls source level; the power amplifier drives the speakers.Powered speaker systemSource: Phone, streamer or DACConnection: Bluetooth or RCAOutput: RCA or AUX outputTarget: Powered speakersNote: Begin with low volume on both devices.Headphone setupSource: Phone, streamer or DACConnection: Bluetooth or RCAOutput: 3.5mm headphone outputTarget: 16–300Ω wired headphonesNote: Use the front volume and tone controls.Technical SpecificationsAudio performance Feature Specification Product type Tube preamplifier / headphone amplifier Headphone impedance 16–300Ω Headphone output 250mW at 16Ω; 150mW at 32Ω; 32mW at 250Ω; 20mW at 300Ω Frequency response 20Hz–20kHz (±1dB) SNR ≥103dB THD ≤0.02% Dynamic range 104dB Crosstalk 95dB Connectivity and power Feature Specification Inputs Bluetooth 5.1, RCA Outputs RCA, AUX, 3.5mm headphone Bluetooth chip Qualcomm QCC3031 Bluetooth codecs SBC, AAC, aptX, aptX HD, aptX LL Bluetooth range ≥10m Power input DC 12V / 1.5A–3A Recommended System Setup Setup Connection Stereo preamp Source → P3 → Power amplifier → Passive speakers Active speakers Source → P3 → Powered speakers Headphones Source → P3 → Wired headphones Additional Product ContentFosi Audio product comparisonCompare Fosi Audio compact preamplifier and tube DAC options by the capabilities that determine how they fit into a system. Feature P3 P4 GR40 Product position Tube preamp + headphone amp Solid-state analog preamp Tube DAC + headphone amp Analog inputs RCA RCA × 3 None Digital / wireless inputs Bluetooth 5.1 None Bluetooth, USB, optical, coaxial Main outputs RCA, AUX RCA, pre-out RCA Headphone output 3.5mm No 3.5mm Speaker amplification No No No Tube stage Yes, replaceable 5654W No Yes Tone controls Bass and treble Bass and treble with bypass Bass and treble Remote control No Yes No SNR ≥103dB ≥110dB ≥103dB Best use Bluetooth tube preamp and headphones Multiple analog source control Digital sources with tube conversion
$79.90
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Fosi Audio Fosi Audio DS1
DescriptionFosi Audio DS1 is a portable USB DAC and headphone amplifier for phones, tablets and computers.An ESS ES9038Q2M DAC, 3.5mm single-ended and 4.4mm balanced outputs, and high-resolution decoding provide a compact upgrade for wired headphones.Why it stands outESS ES9038Q2M conversionA proven ESS DAC architecture supports detailed portable playback.Dual headphone outputsConnect conventional 3.5mm headphones or compatible 4.4mm balanced headphones.High-resolution USB audioSupports PCM up to 32-bit/768kHz and native DSD512.Portable source-powered designRuns from the connected USB device without a separate battery or charger.Best for Wired headphone listening from USB-C phones Laptop and desktop USB audio Portable Hi-Res music systems Headphones requiring 3.5mm or 4.4mm output Not ideal for Wireless Bluetooth listening Headsets requiring microphone or inline-control support Driving passive speakers EMiUZEK Buying Notes DS1 has no battery and draws power from the connected source device. Use a compatible OTG adapter or cable for devices without USB-C; Lightning accessories may be required separately. Do not use a 3.5mm-to-4.4mm adapter with the balanced output. Frequently asked questionsDoes DS1 support both 3.5mm and 4.4mm headphones?Yes, it provides separate 3.5mm single-ended and 4.4mm balanced outputs.Does it include Bluetooth?No. DS1 is a wired USB DAC/headphone amplifier.Does it need charging?No. It is powered by the connected USB source.Can it work with Windows and Mac?Yes. It supports Windows and macOS, subject to the source device and playback software.Can it answer calls through a headset microphone?No. It is intended for audio playback and does not provide headset microphone control.Is warmth during use normal?Some warmth is normal for a compact high-output USB DAC.HOW TO CONNECTUSB-C phone listeningSource icon: phoneSource: USB-C phone / tabletConnection: USB-C audioOutput connection: 3.5mm headphone outputTarget icon: headphonesOutput: Wired headphonesBalanced portable listeningSource icon: phoneSource: USB-C phone / playerConnection: USB-C audioOutput connection: 4.4mm balanced outputTarget icon: headphonesOutput: Compatible balanced headphonesComputer audioSource icon: computerSource: Windows PC / MacConnection: USB audioOutput connection: 3.5mm or 4.4mm outputTarget icon: headphonesOutput: Wired headphonesTechnical SpecificationsAudio architecture Feature Specification Product type Portable USB DAC and headphone amplifier DAC chipset ESS ES9038Q2M Maximum PCM 32-bit / 768kHz DSD DSD64 / 128 / 256 / 512 Outputs and performance Feature Specification Headphone outputs 3.5mm single-ended; 4.4mm balanced Output power 120mW @ 32Ω single-ended; 220mW @ 32Ω balanced Recommended impedance 16–300Ω SNR 120dB Weight 38g Additional Product ContentComparison: Which Fosi Audio model is right for you? Model DS1 DS2 2024 DS3 Primary use Portable Hi-Res music Portable Hi-Res music Music and gaming spatial audio DAC / processing ESS ES9038Q2M Dual CS43131 Hardware 7.1 processing Maximum PCM 32-bit / 768kHz 32-bit / 384kHz 32-bit / 768kHz Maximum DSD DSD512 DSD256 DSD512 Maximum stated output 220mW @ 32Ω balanced 510mW @ 32Ω balanced (manual) 220mW @ 32Ω Best use Compact ESS dongle Higher-power balanced portable setup Gaming effects and spatial audio
$79.90
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Fosi Audio Fosi Audio MC101
DescriptionFosi Audio MC101 is a compact Bluetooth stereo integrated amplifier for passive speakers, styled with an illuminated analog VU meter.Bluetooth 5.3, RCA input, pre-out, tone controls and up to 100W per channel maximum output combine modern connectivity with tactile vintage-inspired control.Why it stands outIlluminated analog VU meterThe moving pointer provides a distinctive visual indication that follows the audio signal.Bluetooth and RCA inputsSwitch between Bluetooth 5.3 wireless playback and a conventional analog source.Passive-speaker amplificationDual TPA3116 amplifiers provide up to 100W × 2 maximum at 4Ω.Pre-out system expansionConnect compatible powered equipment or an additional amplifier from the line-level pre-output.Best for Desktop and bookshelf passive speakers Simple Bluetooth stereo systems Users who value physical tone controls Systems needing a pre-output for expansion Not ideal for HDMI ARC, optical or USB sources Headphone listening Turntables without a phono preamplifier EMiUZEK Buying Notes MC101 powers passive speakers; the pre-out is line level and should not be connected to passive speakers. The 100W × 2 figure is a maximum specification at 4Ω and depends on power supply and load. A turntable needs a built-in or separate phono preamplifier before the RCA input. Frequently asked questionsCan MC101 power passive speakers?Yes, through its rear speaker binding posts.Does it have a subwoofer output?It has a full-range pre-out; a powered subwoofer must provide a compatible input and crossover.Does it include a phono stage?No.Can it connect to a TV?Only when the TV provides compatible analog output; there is no optical or HDMI input.What Bluetooth codecs are supported?SBC and AAC.Can it drive headphones?No headphone output is provided.HOW TO CONNECTBluetooth stereoSource icon: phoneSource: Phone / tabletConnection: Bluetooth 5.3Output connection: Speaker terminalsTarget icon: speakersOutput: Passive speakersWired stereoSource icon: streamerSource: Streamer / DAC / TV analog outputConnection: RCA line inputOutput connection: Speaker terminalsTarget icon: speakersOutput: Passive speakersExpanded systemSource icon: streamerSource: Bluetooth or RCA sourceConnection: Bluetooth or RCAOutput connection: Pre-outTarget icon: speakersOutput: Powered subwoofer, powered speakers or downstream amplifierTechnical SpecificationsConnections Feature Specification Inputs Bluetooth 5.3; RCA Outputs Speaker binding posts; pre-out Bluetooth codecs SBC; AAC Bluetooth range ≥10m Amplification Feature Specification Channels 2 Amplifier chipset 2 × TI TPA3116 Maximum output 100W × 2 @ 4Ω SNR ≥100dB THD ≤0.03% Frequency response 20Hz–20kHz (±1.8dB) DC input 12–24V Supplied adapter 24V / 4.5A Additional Product ContentComparison: Which Fosi Audio model is right for you? Model MC101 BT20A BT20A Pro Amplifier Dual TPA3116 Dual TPA3116D2 TPA3255 Maximum stated output 100W × 2 @ 4Ω 100W × 2 300W × 2 @ 4Ω Pre-out Yes No 3.5mm variable pre-out Signature feature Illuminated VU meter Simple compact stereo Higher output and op-amp rolling Best use Vintage-style Bluetooth stereo Entry compact system Expandable higher-output system
$99.90
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Fosi Audio Fosi Audio Q4
DescriptionFosi Audio Q4 is a compact desktop DAC and headphone amplifier that converts USB, optical or coaxial digital audio to headphones and RCA analog output.Volume plus bass and treble controls, 24-bit/192kHz S/PDIF decoding and support for 16–200Ω headphones make it a practical entry-level computer or TV audio upgrade.Why it stands outThree digital inputsUSB, optical and coaxial connections support computers, TVs, consoles and digital transports.Headphone and RCA outputsListen through 3.5mm headphones or feed an amplifier and powered speakers through RCA.Direct tone adjustmentFront bass and treble controls allow quick system tuning.Compact plug-and-play controlInput selection and analog volume are integrated into a small desktop chassis.Best for Entry-level computer audio TV optical PCM to headphones or stereo system Desktop headphones and powered speakers Users wanting physical bass and treble controls Not ideal for Dolby or DTS bitstream decoding Balanced headphone systems Headphones above the specified 200Ω range EMiUZEK Buying Notes Set TVs and consoles to two-channel PCM; Q4 does not decode Dolby or DTS. Inserting headphones can mute the RCA output. USB audio reaches 24-bit/96kHz; optical and coaxial reach 24-bit/192kHz. Frequently asked questionsCan Q4 connect to a TV?Yes, through optical or coaxial when the TV is set to PCM stereo.Does it decode Dolby or DTS?No. Use PCM output to avoid noise or silence.Can it drive passive speakers?No. RCA must feed an amplifier, or use powered speakers.Can I use headphones and RCA together?The headphone connection can mute RCA output, so treat them as alternate outputs.Does USB need a driver?It is generally plug-and-play on listed systems; select Fosi Audio Q4 as the playback device.Can I connect an analog source?No. All Q4 inputs are digital.HOW TO CONNECTComputer headphonesSource: PC or MacConnection: USB audioOutput: 3.5mm headphoneTarget: 16–200Ω headphonesNote: Select Q4 as the playback device.TV headphonesSource: TelevisionConnection: Optical PCMOutput: 3.5mm headphoneTarget: Wired headphonesNote: Disable Dolby and DTS output.Stereo systemSource: Computer, TV or transportConnection: USB, optical or coaxialOutput: RCATarget: Amplifier or powered speakersNote: Use Q4 volume and tone controls.Technical SpecificationsAudio performance Feature Specification USB sampling Up to 24-bit / 96kHz Optical / coaxial Up to 24-bit / 192kHz Headphone output 100mW at 32Ω Headphone impedance 16–200Ω THD / SNR ≤0.01% / ≥105dB RCA output level 2.3V Connections and physical Feature Specification Inputs USB, optical, coaxial Outputs 3.5mm headphone, RCA Chipset SA9023 + CS8412 + 97220 + NE5532 Power 5V Dimensions 73.5 × 98 × 33mm Weight 251g Recommended System Setup Setup Connection Computer headphones Computer → USB → Q4 → Headphones TV system TV optical PCM → Q4 → Amplifier Powered speakers Digital source → Q4 RCA → Powered speakers Additional Product ContentFosi Audio product comparisonCompare the models by the differences that most affect system matching and everyday use. Feature Q4 K5 Pro SK02 Product position Entry desktop DAC/amp Gaming DAC/amp Higher-performance desktop DAC/amp USB maximum 24-bit / 96kHz 24-bit / 96kHz 32-bit / 384kHz, DSD256 Other digital inputs Optical, coaxial Optical, coaxial Optical Headphone outputs 3.5mm 3.5mm 3.5mm, 4.4mm Maximum headphone power 100mW at 32Ω 500mW at 32Ω 755mW at 32Ω via 4.4mm Microphone input No Yes No RCA output Yes Yes No Tone controls Bass, treble Bass, treble No Balanced output No No 4.4mm Best use Simple PC/TV audio Gaming with microphone Hi-res desktop headphones
$69.90
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Fosi Audio Fosi Audio SK01
DescriptionFosi Audio SK01 is a battery-powered analog headphone amplifier and preamplifier with 3.5mm line input, dual headphone jacks and adjustable three-band tone control.Up to 2400mW at 32Ω in high gain, pure bypass, loudness and a 2500mAh battery make it flexible for desktop and transportable wired listening.Why it stands outHigh-power analog headphone driveHigh gain delivers up to 2400mW at 32Ω for a broad 16–300Ω headphone range.Three-band tone shapingSeparate treble, midrange and bass controls allow more precise adjustment than basic two-band designs.Pure and loudness modesBypass removes tone processing, while loudness improves perceived bass and treble at low listening levels.Headphone amp and preamp3.5mm line out feeds an amplifier or powered speakers with the same volume and tone control.Best for Powerful wired headphone listening Analog sources needing portable amplification Users wanting three-band tone control Preamp use with powered speakers or a power amplifier Not ideal for USB digital audio or DAC conversion Bluetooth wireless playback Balanced headphone connections EMiUZEK Buying Notes SK01 is analog only; USB-C is for charging and does not carry audio data. It cannot drive passive speakers directly; line out must feed an amplifier. High gain can become very loud—start at minimum volume before wearing headphones. Frequently asked questionsDoes USB-C carry audio?No. USB-C is for 5V charging only.Can it work as a preamp?Yes. Use 3.5mm line out into an amplifier or powered speakers.Can it drive passive speakers?No. A separate power amplifier is required.What headphones are supported?Fosi specifies 16–300Ω.Can tone controls be bypassed?Yes. PURE mode bypasses the tone circuit.How long does the battery last?Fosi states up to about six hours, depending on use and load.HOW TO CONNECTPortable headphonesSource: Phone, DAP or dongle DACConnection: 3.5mm line inOutput: 3.5mm or 6.35mm headphoneTarget: Wired headphonesNote: USB-C is not an audio input.Desktop preampSource: DAC or streamerConnection: 3.5mm line inOutput: 3.5mm line outTarget: Power amplifier or powered speakersNote: SK01 controls level and tone.High-impedance headphonesSource: Line-level DACConnection: 3.5mm line inOutput: 6.35mm headphoneTarget: 16–300Ω headphonesNote: Choose gain carefully and start low.Technical SpecificationsAudio performance Feature Specification High / low gain output 2400mW / 300mW at 32Ω Headphone impedance 16–300Ω SNR 108dB THD ≤0.001% at 1kHz / 770mV Frequency response 20Hz–20kHz (±0.05dB) Noise floor / Crosstalk 20μV / 83dB Connections and power Feature Specification Input 3.5mm line in Outputs 3.5mm line out; 3.5mm and 6.35mm headphones Tone adjustment Treble ±8dB; mid ±10dB; bass ±11dB Battery 2500mAh Charging DC 5V USB-C; power only Recommended System Setup Setup Connection Portable Phone/DAP → SK01 → Headphones Desktop DAC → SK01 → Headphones Preamp Source → SK01 line out → Power amplifier Additional Product ContentFosi Audio product comparisonCompare the models by the differences that most affect system matching and everyday use. Feature SK01 SK02 P3 Product position Analog headphone amp / preamp USB/optical DAC headphone amp Tube preamp / headphone amp Digital DAC No Yes, ES9038Q2M Bluetooth input only Main inputs 3.5mm line USB, optical Bluetooth, RCA Headphone outputs 3.5mm, 6.35mm 3.5mm, 4.4mm 3.5mm Maximum output at 32Ω 2400mW high gain 755mW via 4.4mm 150mW Balanced headphone output No 4.4mm No Tone controls Treble, mid, bass No Bass, treble Battery operation Yes No No Line / pre-out 3.5mm 3.5mm line / optical RCA, AUX Best use Powerful analog portable amp Hi-res desktop DAC/amp Tube Bluetooth preamp
$79.00
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Arylic Arylic BR10
Description Arylic BR10 is a high-quality Bluetooth audio receiver designed to add modern wireless connectivity to traditional HiFi systems, active speakers, and amplifiers. With Bluetooth 5.2, aptX HD and aptX Adaptive support, optical output, analog output, USB audio connection, and USB playback, BR10 allows you to stream music wirelessly from smartphones, tablets, and computers to your existing audio system. Why it stands out Upgrade Traditional Audio Systems BR10 adds Bluetooth playback capability to existing wired audio equipment. Connect smartphones and tablets wirelessly Upgrade traditional amplifiers and active speakers Optical and analog audio outputs Compact plug-and-play design High-Quality Bluetooth Audio BR10 supports advanced Bluetooth codecs for improved wireless sound quality. Bluetooth 5.2 aptX Adaptive aptX HD aptX AAC / SBC Flexible Audio Connections Connect BR10 with different audio systems: Stereo amplifiers Active speakers Sound systems Desktop audio setups Available outputs: Optical digital output 3.5mm analog output USB Audio and Local Playback BR10 provides additional digital audio options. USB DAC connection for PC USB storage playback Local music file playback Best for Upgrading traditional amplifiers with Bluetooth Active speaker systems Desktop audio setups Vintage HiFi systems Users streaming music from smartphones and tablets Not ideal for Users looking for WiFi music streaming Users needing AirPlay or Spotify Connect Users wanting a Bluetooth transmitter for headphones Users requiring built-in speaker amplification EMiUZEK Buying Notes Arylic BR10 is a Bluetooth receiver, not a Bluetooth transmitter. It receives audio from Bluetooth devices and outputs audio to amplifiers or active speakers. Passive speakers require a separate amplifier. Optical output is recommended when connecting to digital audio systems. For sending TV audio to Bluetooth headphones, choose a Bluetooth transmitter instead. FAQ What is Arylic BR10 used for? BR10 adds Bluetooth playback capability to traditional audio systems. Typical setup: Smartphone → BR10 → Amplifier / Active Speakers Can Arylic BR10 connect to an amplifier? Yes. BR10 can connect to amplifiers through analog or optical output, allowing traditional HiFi systems to receive Bluetooth audio. Can Arylic BR10 connect to active speakers? Yes. BR10 can directly connect to compatible active speakers through its analog output. Does Arylic BR10 support high-quality Bluetooth codecs? Yes. BR10 supports aptX Adaptive, aptX HD, aptX, AAC, and SBC codecs with compatible devices. Can Arylic BR10 connect to a computer? Yes. BR10 supports USB DAC connection for computer audio playback. Can Arylic BR10 play music from USB storage? Yes. The USB port supports playback from compatible USB storage devices. Can Arylic BR10 transmit audio to Bluetooth headphones? No. BR10 is a Bluetooth receiver. For transmitting audio to Bluetooth headphones or speakers, use a Bluetooth transmitter. What is the difference between Arylic BR10 and BT10? BR10 is a Bluetooth receiver: Phone → BR10 → Amplifier/Speakers BT10 is a Bluetooth transmitter: TV/Audio Source → BT10 → Bluetooth Headphones/Speakers HOW TO CONNECT Amplifier Setup Source icon: smartphoneSource: Bluetooth DeviceConnection: BluetoothOutput connection: Optical / Analog OutputTarget icon: amplifierOutput: Stereo Amplifier Note: Add Bluetooth streaming to your existing HiFi system. Active Speaker Setup Source icon: smartphoneSource: Bluetooth DeviceConnection: BluetoothOutput connection: Analog OutputTarget icon: speakersOutput: Active Speakers Note: Upgrade wired active speakers with wireless playback. PC Audio Setup Source icon: computerSource: PC / MacConnection: USB DACOutput connection: Audio OutputTarget icon: amplifierOutput: Audio System Note: Use BR10 as a USB Bluetooth audio solution. Technical Specifications Bluetooth Feature Specification Bluetooth Version Bluetooth 5.2 Bluetooth Mode Receiver (RX) Bluetooth Connection Up to 2 Bluetooth Transmitter Devices Codec Support aptX Adaptive / aptX HD / aptX / AAC / SBC Transmission Range Up to 15m Audio Outputs Feature Specification Optical Output Up to 24-bit / 192kHz PCM Analog Output 3.5mm Line Out Audio Inputs Feature Specification Bluetooth Input Supported USB-C USB DAC for PC USB Host USB Storage Playback Analog Input 3.5mm Line In Audio Performance Feature Specification Frequency Response 20Hz–20kHz General Feature Specification Power Input USB-C 5V/1A Dimensions 108 × 72 × 26.6 mm Weight Approx. 89g Recommended System Setup Setup Connection BR10 + Amplifier Smartphone → BR10 → Amplifier → Speakers BR10 + Active Speakers Smartphone → BR10 → Active Speakers BR10 + PC PC → USB → BR10 → Audio System What's in the box Arylic BR10 ×1 USB-C Power Cable ×1 Audio Cable ×1 User Manual ×1 EMIUZEK Download Center Access product manuals, firmware updates, and additional support resources. Arylic BR10 manuals and downloads: https://emiuzek.com/pages/download Additional Product Content Arylic BR10 vs Arylic BT10 Feature Arylic BR10 Arylic BT10 Product Position Bluetooth Receiver Bluetooth Transmitter Main Function Add Bluetooth to audio systems Add Bluetooth output to TVs/audio sources Signal Direction Phone → Audio System Audio Source → Bluetooth Device Bluetooth Mode RX TX Optical Connection Output Input Best Use Upgrade amplifiers and speakers Bluetooth headphones and wireless speakers
$49.90 $45.00
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Fosi Audio Fosi Audio MC351
DescriptionFosi Audio MC351 is a compact 2.1-channel integrated digital amplifier for passive stereo speakers and a passive subwoofer.Dual TI TPA3255 amplifier chips, broad digital and analog inputs and up to 165W × 2 + 350W at 4Ω make it a practical control center for powerful 2.1 systems.Why it stands outDedicated 2.1 amplificationSeparate stereo and passive-subwoofer amplification builds a complete 2.1 system without a second power amp.Dual TPA3255 architectureTwo TI TPA3255 amplifier chips provide high output for speakers and a passive subwoofer.Broad source compatibilityBluetooth 5.3, USB, optical, coaxial and RCA inputs cover common music, computer and TV sources.System expansion through pre-outThe pre-out connection supports a powered subwoofer or compatible downstream equipment.Best for Passive bookshelf or floorstanding speaker systems 2.1 systems using a passive subwoofer TV and desktop systems using optical, coaxial or USB audio Users who need both wireless and wired source inputs Not ideal for Users needing HDMI ARC or TV-remote CEC control Headphone-only systems Turntables without a built-in or external phono preamp EMiUZEK Buying Notes MC351 directly powers passive speakers and a passive subwoofer; these are different from line-level active speakers. USB is an audio-data input, not a power input. RCA is line level and does not replace a phono preamp for a standard turntable. Frequently asked questionsCan MC351 drive passive speakers?Yes. It is designed for 4–8Ω passive speakers.Can it power a passive subwoofer?Yes. It has a dedicated amplified passive-subwoofer output.Can I connect a powered subwoofer?Yes. Use the line-level pre-out with a compatible powered subwoofer.Does it support HDMI ARC?No. Use optical, coaxial or RCA audio from a television.What does the USB port do?It receives USB digital audio from a compatible computer or source; it does not power the amplifier.Can I connect a turntable?Only if the turntable has a built-in phono preamp or you add an external phono preamp.HOW TO CONNECT2.1 passive speaker systemSource: Computer, streamer or TVConnection: USB, optical, coaxial, RCA or BluetoothOutput: Speaker terminals + passive-subwoofer outputTarget: Passive speakers + passive subwooferNote: Match speaker impedance and begin with low volume.Stereo speaker systemSource: Any supported digital or analog sourceConnection: Chosen inputOutput: Left/right speaker terminalsTarget: 4–8Ω passive speakersNote: Leave the passive-subwoofer output unused for a 2.0 system.System with powered subwooferSource: Any supported sourceConnection: Chosen inputOutput: Speaker terminals + pre-outTarget: Passive speakers + powered subwooferNote: Set crossover and level on the powered subwoofer.Technical SpecificationsCore specifications Feature Specification Product type 2.1-channel integrated digital amplifier Amplifier chips TI TPA3255 × 2 Maximum output 165W × 2 + 350W at 4Ω Speaker impedance 4–8Ω THD ≤0.03% SNR / Dynamic range ≥100dB / ≥100dB Power input range DC 24–48V Inputs and outputs Feature Specification Inputs Bluetooth 5.3, USB, optical, coaxial, RCA Outputs Passive speakers, passive subwoofer, pre-out USB sampling Up to 24-bit / 96kHz Optical / coaxial sampling Up to 32-bit / 192kHz Frequency response 20Hz–20kHz (±0.5dB) Subwoofer output range 20Hz–250Hz Recommended System Setup Setup Connection 2.1 passive system Source → MC351 → Passive speakers + passive subwoofer TV system TV optical output → MC351 → Passive speakers Powered sub expansion Source → MC351 → Passive speakers + pre-out → Powered subwoofer Additional Product ContentFosi Audio product comparisonCompare the two compact Fosi Audio integrated amplifiers by their power, output structure and intended system layout. Feature MC351 MC331 Product position High-power 2.1 digital integrated amplifier Tube DAC / integrated stereo amplifier Built-in speaker amplifier Yes Yes Maximum output 165W × 2 + 350W at 4Ω 105W × 2 at 4Ω Main inputs Bluetooth 5.3, USB, optical, coaxial, RCA Bluetooth, USB, optical, coaxial, RCA Speaker output Stereo passive speakers Stereo passive speakers Passive subwoofer output Yes, dedicated amplified output No Line-level pre-out Yes Yes Headphone output No Yes, 3.5mm Tube stage No Yes, replaceable tubes Best use Powerful passive-speaker 2.1 system Compact tube stereo and headphone system
$169.90
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Fosi Audio Fosi Audio BT30D Pro
DescriptionFosi Audio BT30D Pro is a TPA3255-based 2.1-channel Bluetooth integrated amplifier for passive stereo speakers and passive or powered subwoofers.High-output Class-D amplification, separate bass controls and flexible subwoofer connections make it a compact control center for a powerful 2.1 system. Why it stands outHigh-output 2.1 amplificationDedicated stereo and subwoofer channels provide up to 165 W × 2 plus 350 W maximum at 4 Ω.Flexible subwoofer supportConnect a passive subwoofer from the amplified output or powered equipment from the 3.5 mm full-range line output.Independent system tuningMaster volume, bass, treble, subwoofer volume and subwoofer frequency controls support practical room integration.Bluetooth and RCA inputsWorks with wireless mobile sources or conventional analog line-level equipment. Best for Higher-output compact 2.1 systems Passive bookshelf or floor-standing speakers Passive or powered subwoofer integration Desktop, living-room and small TV systems with analog audio Not ideal for Systems requiring HDMI ARC, optical or USB inputs Users needing a headphone output Turntables without a phono preamplifier EMiUZEK Buying Notes The advertised 165 W × 2 + 350 W figures are maximum ratings at 4 Ω and depend on the power supply and load. The 3.5 mm output is full-range; powered subwoofers should use their own crossover where required. Bluetooth has priority over RCA, so disconnect Bluetooth to return to the wired input. Frequently asked questionsCan it power passive speakers and a passive subwoofer?Yes. It provides amplified outputs for both.Can it connect to a powered subwoofer?Yes, using the 3.5 mm full-range output and the powered subwoofer's compatible input.Can it operate as a 2.0 amplifier?Yes. A subwoofer is optional.Does it support aptX?No. The official instructions state that aptX, aptX HD and aptX Low Latency are not supported.Can it connect directly to a turntable?Only if the turntable provides line-level output; otherwise add a phono preamplifier.Can it connect to a TV?Yes when the TV has compatible analog output. It does not have HDMI ARC or optical input. HOW TO CONNECTHigh-output passive 2.1 systemSource icon: streamerSource: Streamer / DAC / phoneConnection: RCA or BluetoothOutput connection: Stereo speaker terminals + passive subwoofer terminalsTarget icon: speakersOutput: Passive speakers + passive subwooferPowered subwoofer systemSource icon: TVSource: TV analog output / DACConnection: RCAOutput connection: Stereo speaker terminals + 3.5 mm full-range outputTarget icon: speakersOutput: Passive speakers + powered subwoofer Passive 2.0 stereo systemSource icon: streamerSource: Streamer / DAC / phoneConnection: RCA or BluetoothOutput connection: Stereo speaker terminalsTarget icon: speakersOutput: Two passive speakersNote: A subwoofer is optional; leave the subwoofer outputs unused for a 2.0 system.Technical SpecificationsInputs Feature Specification Bluetooth 5.0 Included RCA line input Included Outputs Feature Specification Stereo passive-speaker output Included Passive-subwoofer speaker output Included 3.5 mm full-range line output Included Amplification Feature Specification Amplifier Chip TI TPA3255 Maximum Output 165 W × 2 + 350 W at 4 Ω Speaker Impedance 2–8 Ω Frequency Response 20 Hz–20 kHz (±1 dB) THD ≤0.04% SNR ≥108 dB Input Sensitivity 700 mV Passive Subwoofer Frequency Adjustment up to 300 Hz Connectivity and power Feature Specification Bluetooth Range up to 50 ft without obstacles DC Input Range 12–36 V Power Adapter dependent on selected variant Additional Product ContentComparison: BT30D or BT30D Pro? Feature BT30D BT30D Pro Amplifier architecture 2 × TPA3116D2 TPA3255 Maximum output 50 W × 2 + 100 W 165 W × 2 + 350 W at 4 Ω DC input range Supplied 24 V / 4.5 A 12–36 V Best use Compact moderate-output 2.1 Higher-output 2.1 systems
$109.90 - $129.90
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Fosi Audio Fosi Audio TB10D
DescriptionFosi Audio TB10D is a compact analog stereo power amplifier for driving passive speakers from a line-level source.Its TI TPA3255 power stage, 300W x2 maximum rating and front bass/treble controls deliver strong value for simple, adjustable HiFi systems. Why it stands outFour reasons this product deserves a place in a well-planned audio system.TPA3255 AmplificationTexas Instruments Class D architecture provides high efficiency and substantial power from a compact chassis.300W x2 Maximum RatingThe amplifier offers useful headroom for compatible 2–8Ω passive speakers; real output depends on the supply and speaker load.Front Tone ControlsDedicated bass and treble knobs allow quick adjustment without an app or external equalizer.Straightforward Analog SystemOne RCA input and speaker outputs keep setup simple for users who already own a DAC, streamer or preamp. Best for Budget-focused passive-speaker systems Users who want physical bass and treble adjustment Desktop and small-room stereo systems Pairing with an existing DAC, streamer or preamp Not ideal for Users requiring Bluetooth, USB, optical or HDMI inputs Balanced XLR systems Headphone listening Systems requiring a dedicated subwoofer or preamplifier output EMiUZEK Buying Notes TB10D is an analog speaker amplifier; it requires a separate line-level source. The 300W x2 figure is a maximum rating under specific conditions, not continuous output with every power supply and speaker. It has no headphone, Bluetooth or dedicated subwoofer output. Frequently Asked QuestionsCan the TB10D drive passive speakers directly?Yes. It supports compatible 2–8Ω passive speakers.Does it include Bluetooth?No. Add a Bluetooth receiver or streamer to the RCA input if wireless playback is needed.Can I connect a turntable?Only through a turntable with built-in phono output or a separate phono preamplifier.Does it have a subwoofer output?No dedicated subwoofer or pre-out is provided.Can I use a DAC or network streamer?Yes. Connect its analog line output to the TB10D RCA input.What does 300W x2 mean?It is the specified maximum output under particular supply and load conditions; usable continuous power varies with the system. HOW TO CONNECTDAC stereo systemSource: Computer / digital sourceConnection: USB or digital to DAC; RCA from DACOutput: Speaker terminalsTarget: Passive speakersNote: Set the DAC to line or controlled output as appropriate.Network streaming systemSource: Network streamerConnection: RCA line outputOutput: Speaker terminalsTarget: Passive speakersNote: Use the streamer for source selection and playback.TV stereo systemSource: TelevisionConnection: Optical/HDMI to external DAC; RCA to TB10DOutput: Speaker terminalsTarget: Passive speakersNote: TB10D does not accept TV digital audio directly. Technical SpecificationsAmplifier Feature Specification Product Type Analog stereo Class D amplifier Amplifier Chip TI TPA3255 Maximum Output 300W x2 at 4Ω Speaker Impedance 2–8Ω Audio Feature Specification Frequency Response 20Hz–40kHz (±2dB) THD ≤0.3% SNR ≥90dB Input Sensitivity ≤600mV Connectivity and Power Feature Specification Input Stereo RCA line input Output Passive speaker binding posts Tone Controls Bass and treble DC Input 18–48V Included Power Supply 32V/5A Recommended System Setup Setup Connection DAC system Digital source → DAC → RCA → TB10D → passive speakers Streamer system Streamer → RCA → TB10D → passive speakers TV system TV → external DAC → RCA → TB10D → passive speakers Additional Product Content Feature TB10D V3 Stereo BT20A Pro Product Position Tone-control stereo amp Pure stereo amp Bluetooth stereo amp Amplifier Chip TPA3255 TPA3255 TPA3255 Maximum Output 300W x2 at 4Ω 300W x2 at 4Ω 300W x2 at 4Ω Analog Input RCA RCA RCA Bluetooth No No Yes Tone Controls Bass, treble No Bass, treble Pre-out No Yes Yes Speaker Load 2–8Ω 2–8Ω 2–8Ω Best Use Simple adjustable stereo Minimal pure analog path Wireless stereo system
$79.90
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Fosi Audio Fosi Audio BT30D
DescriptionFosi Audio BT30D is a compact 2.1-channel Bluetooth integrated amplifier for two passive speakers and a passive or powered subwoofer.Dedicated subwoofer level and crossover controls make it a straightforward way to build an adjustable small-room, desktop or TV audio system. Why it stands outTrue 2.1-channel speaker controlSeparate stereo and subwoofer amplification supports passive speakers plus a passive subwoofer from one compact unit.Passive and powered subwoofer flexibilitySpeaker-level subwoofer output and a line-level subwoofer connection support different bass-system configurations.Dedicated bass integrationSubwoofer volume and cutoff adjustment help blend low frequencies with the main speakers. Compact analog controlMaster volume, bass, treble, subwoofer level and crossover adjustment are available directly from the front panel.Best for Compact 2.1 passive-speaker systems Desktop and small-room audio Adding an adjustable subwoofer to bookshelf speakers Bluetooth or RCA playback Not ideal for Systems requiring HDMI ARC or digital audio inputs Users needing a headphone output Large high-output home-theater systems EMiUZEK Buying Notes The main left/right outputs are for passive speakers. Use the dedicated speaker output for a passive subwoofer or the line-level output for a powered subwoofer. It has no phono stage; a turntable requires line output or an external phono preamplifier. Frequently asked questionsCan it power a passive subwoofer?Yes, through the dedicated subwoofer speaker output.Can it connect to a powered subwoofer?Yes, through its line-level subwoofer output.Can it be used without a subwoofer?Yes, it can operate as a 2.0-channel amplifier for passive speakers.Can it connect to a TV?Yes when the TV provides compatible analog audio output; it has no HDMI or optical input.Can it power active speakers?The main speaker outputs are amplified for passive speakers. A compatible line-level output should be used for powered equipment.Does it include Wi-Fi streaming?No. Wireless playback is through Bluetooth. HOW TO CONNECTPassive 2.1 systemSource icon: phoneSource: Phone / streamerConnection: Bluetooth or RCAOutput connection: L/R speaker terminals + passive subwoofer terminalsTarget icon: speakersOutput: Two passive speakers + passive subwooferPowered subwoofer systemSource icon: TVSource: TV analog output / DACConnection: RCAOutput connection: L/R speaker terminals + line-level sub outputTarget icon: speakersOutput: Passive speakers + powered subwoofer Passive 2.0 stereo systemSource icon: streamerSource: Streamer / DAC / phoneConnection: RCA or BluetoothOutput connection: Left and right speaker terminalsTarget icon: speakersOutput: Two passive speakersNote: A subwoofer is optional; the BT30D can operate as a conventional stereo amplifier.Technical SpecificationsInputs Feature Specification Bluetooth 5.0 Included RCA line input Included Outputs Feature Specification Stereo passive-speaker output Included Passive-subwoofer speaker output Included Line-level output for powered subwoofer Included Amplification Feature Specification Amplifier Chipset 2 × TI TPA3116D2 Maximum Main Output 50 W × 2 Maximum Subwoofer Output 100 W Speaker Impedance 2–8 Ω Subwoofer Cutoff Adjustment 20–200 Hz Connectivity and physical Feature Specification Bluetooth Range up to 15 m / 49 ft without obstacles Dimensions 118 × 132 × 35 mm Supplied Power Adapter 24 V / 4.5 A Additional Product ContentComparison: BT30D or BT30D Pro? Feature BT30D BT30D Pro Amplifier architecture 2 × TPA3116D2 TPA3255 Maximum output 50 W × 2 + 100 W 165 W × 2 + 350 W at 4 Ω DC input range Supplied 24 V / 4.5 A 12–36 V Best use Compact moderate-output 2.1 Higher-output 2.1 systems
$79.90
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Fosi Audio Fosi Audio V3
DescriptionThis Fosi Audio V3 listing is for the V3 Mono compact monoblock power amplifier, sold in single-amp and stereo-pair configurations depending on the selected variant.Its TPA3255-based architecture, XLR balanced/RCA inputs and 240W rated mono output support scalable, high-power passive-speaker systems. Why it stands outFour reasons this product deserves a place in a well-planned audio system.True Monoblock ArchitectureEach V3 Mono amplifies one audio channel, allowing separate left/right amplification in a stereo pair.XLR Balanced and RCA InputsThe selectable input formats make integration practical with balanced preamps, DACs and conventional RCA sources.240W Rated Mono OutputStrong single-channel output supports demanding compatible passive speakers when correctly powered.Scalable Power OptionsVariants include amplifier-only and power-supply bundles, including configurations for one or two monoblocks. Best for Stereo systems using two monoblock amplifiers Balanced XLR preamp or DAC systems Compact high-power passive-speaker installations Users planning a modular amplifier upgrade Not ideal for Buyers expecting one unit to power both stereo channels Users without a preamp, DAC or source with volume control Headphone or powered-speaker systems Buyers who have not checked whether their selected variant includes a power supply EMiUZEK Buying Notes This product is V3 Mono: one amplifier powers one speaker channel; two units are required for conventional stereo. Check the selected variant carefully because amplifier quantity and included power supply differ. Use a preamp, DAC or source with suitable volume control; V3 Mono is a power amplifier, not a complete source device. Frequently Asked QuestionsDo I need one or two V3 Mono amplifiers?One unit powers one channel. A standard two-channel stereo system requires two monoblocks.Does every variant include a power supply?No. The listing includes amplifier-only and power-supply bundle options; verify the selected variant.Can it connect to an XLR source?Yes. It supports balanced XLR input as well as RCA input.Can it drive headphones?No. It is a passive-speaker power amplifier and has no headphone output.Does it include Bluetooth or a DAC?No. Connect a compatible external preamp, DAC or streamer.Can I use one 48V/10A supply with two units?A listed two-amplifier bundle is available with a 48V/10A supply; use only the configuration and cabling supplied or specified for that variant. HOW TO CONNECTBalanced stereo systemSource: Balanced DAC / preampConnection: XLR to each monoblockOutput: Speaker terminalsTarget: One passive speaker per V3 MonoNote: Use two units for left and right channels.RCA stereo systemSource: RCA preamp / controlled DACConnection: RCA to each monoblockOutput: Speaker terminalsTarget: One passive speaker per V3 MonoNote: Split left and right outputs to separate units.Single-channel systemSource: Mono source / preamp channelConnection: XLR or RCAOutput: Speaker terminalsTarget: One passive speakerNote: One unit powers one channel only. Technical SpecificationsAmplifier Feature Specification Product Type Mono Class D power amplifier Amplifier Chip TI TPA3255 Rated Output 240W mono Channels per Unit 1 Connectivity Feature Specification Inputs XLR balanced; RCA Output Passive speaker binding posts Input Selection Balanced / RCA selectable Headphone Output None Power and Design Feature Specification Power Options Variant-dependent: no PSU, 48V/5A or 48V/10A bundles Cooling Full-body heat-dissipation chassis System Requirement Preamp or source with volume control Recommended System Setup Setup Connection Balanced stereo Balanced DAC/preamp → two V3 Mono amps → passive speaker pair RCA stereo RCA preamp → two V3 Mono amps → passive speaker pair Single channel Mono line source → one V3 Mono → one passive speaker Additional Product Content Feature V3 Mono ZA3 V3 Stereo Amplifier Format Monoblock Stereo / mono-capable Stereo Channels per Unit 1 2 stereo or 1 mono 2 Amplifier Chip TPA3255 TPA3255 TPA3255 Inputs XLR balanced, RCA XLR balanced, RCA RCA Rated / Maximum Positioning 240W rated mono High-power stereo/mono 300W x2 maximum Stereo Units Required 2 1 in stereo mode 1 Pre-out No Subwoofer output 3.5mm pre-out Tone Controls No No No Best Use Dedicated monoblock stereo Flexible balanced amp Simple RCA stereo
$109.00 - $279.00
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Fosi Audio Fosi Audio Box X5
DescriptionFosi Audio Box X5 is a compact phono preamplifier for moving-magnet and moving-coil turntable cartridges.Four selectable gain settings, precise RIAA equalization and low-noise components make it a flexible upgrade between a turntable and a line-level amplifier or powered speakers. Why it stands out MM and MC cartridge supportA front-panel cartridge selector and 38 / 48 / 56 / 66 dB gain settings accommodate a broad range of phono cartridges. Precision analog signal pathOPA1612 amplification, precision film components and gold-plated RCA connections are designed for accurate, low-noise vinyl playback. Simple system integrationDedicated RCA input, RCA output and grounding terminal provide a straightforward connection between a turntable and a line-level audio system. Low-noise, user-friendly analog designAn aluminum chassis, one-touch controls and dedicated grounding support make setup straightforward while helping preserve a clean phono signal.Best for Turntables with MM or MC cartridges Vinyl systems without a built-in phono stage Upgrading an entry-level integrated phono preamp Compact desktop or living-room analog systems Not ideal for Turntables that only provide USB audio Users needing Bluetooth or digital inputs Directly driving passive speakers or headphones EMiUZEK Buying Notes Box X5 is a phono preamplifier, not a speaker power amplifier. Connect its RCA output to a line-level AUX input, powered speakers or a separate amplifier; do not connect it to another PHONO input. Select MM/MC mode and gain according to the cartridge manufacturer's output specification. Frequently asked questions Does Box X5 support both MM and MC cartridges?Yes. It provides selectable MM/MC operation and four gain settings. Does it include Bluetooth, USB or optical input?No. Box X5 is an analog phono stage with RCA phono input and RCA line output. Can it power passive speakers?No. A separate power amplifier or powered speakers are required. Can it be connected to powered speakers?Yes, provided the speakers have a compatible analog line input and their own volume control. Should I connect the turntable ground wire?Yes, when the turntable provides one. Proper grounding helps reduce hum. Can it be used as a normal line-level preamplifier?No. Its gain and RIAA equalization are designed specifically for phono cartridges. HOW TO CONNECT Turntable to integrated amplifierSource icon: turntableSource: MM or MC turntableConnection: RCA phono input + groundOutput connection: RCA line outputTarget icon: amplifierOutput: AUX / line input on an integrated amplifierNote: Do not connect the Box X5 output to another PHONO input. Turntable to powered speakersSource icon: turntableSource: MM or MC turntableConnection: RCA phono input + groundOutput connection: RCA line outputTarget icon: speakersOutput: Powered speakers with analog input Turntable to headphone systemSource icon: turntableSource: MM or MC turntableConnection: RCA phono input + groundOutput connection: RCA line outputTarget icon: headphonesOutput: Headphone amplifier connected to headphonesNote: Box X5 does not include a headphone amplifier; connect its line output to a separate headphone amplifier.Technical SpecificationsInputs and outputs Feature Specification MM / MC RCA phono input Included RCA line output Included Turntable grounding terminal Included Audio performance Feature Specification Gain 38 / 48 / 56 / 66 dB Frequency Response 20 Hz–20 kHz (±0.015 dB) THD ≤0.009% SNR ≥92 dB Operational Amplifier OPA1612 Physical and power Feature Specification Dimensions 4.1 × 6.5 × 1.4 in Power Supply 16 V / 1 A
$109.90
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