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Questyle Questyle CMA18 Master Hi-Res DAC/AMP
Questyle CMA Eighteen Master is a flagship desktop DAC, preamplifier and headphone amplifier designed as the control centre of a reference headphone or HiFi system.Its 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. Why it stands outFlagship desktop integrationCombines digital decoding, analogue preamplification and headphone amplification in one reference-class component.Full-chain Current Mode designQuestyle’s Current Mode signal path is engineered for wide bandwidth, low distortion and precise transient response.Balanced system architectureBalanced headphone and line connections support demanding headphones and high-quality downstream systems.Flexible source controlMultiple digital and analogue inputs make it suitable for computers, transports and existing HiFi sources. Best for Reference desktop headphone systems High-end DAC and preamplifier upgrades Balanced headphones and active monitor systems Multi-source desktop or living-room HiFi systems Not ideal for Portable or battery-powered listening Directly driving passive loudspeakers Users who only need a simple USB dongle EMiUZEK Buying Notes This is the desktop CMA Eighteen Master, not the battery-powered CMA18 Portable. It is a DAC, preamplifier and headphone amplifier; it does not contain a loudspeaker power amplifier. Connect passive speakers through a separate power amplifier or integrated amplifier. Frequently asked questionsCan it drive passive speakers directly?No. Use its line output with an external power amplifier or active speakers.Can it be used as a preamplifier?Yes, connect its line output to a compatible power amplifier or active monitors.Can I connect a computer?Yes, use the appropriate digital input and install the official driver where required.Does it support balanced headphones?Yes, it provides balanced headphone connectivity as well as single-ended headphone use.Is this the CMA18 Portable?No. This listing is for the full-size desktop CMA Eighteen Master. HOW TO CONNECTDesktop Headphone SystemSource: PC / MacConnection: USB audioOutput: Balanced or single-ended headphone outputTarget: Wired headphonesActive Speaker SystemSource: Digital or analogue sourceConnection: Compatible inputOutput: Line / preamplifier outputTarget: Active speakersHiFi Preamp SystemSource: Streamer / CD transportConnection: Digital inputOutput: Balanced or RCA line outputTarget: Power amplifier and passive speakers Technical Specifications Feature Specification Product type Desktop DAC / preamplifier / headphone amplifier Architecture Fully balanced full-chain Current Mode design Digital sources Computer, digital transport and compatible digital audio sources Analogue input Line-level analogue input Headphone outputs Balanced and single-ended Line outputs Balanced and unbalanced Speaker amplification Not built in Power AC-powered desktop component What's in the box Questyle CMA Eighteen Master Power cable Remote control Product documentation Download CenterAccess product manuals, firmware updates, and additional support resources.Download CenterAdditional Product Content📊 Comparison: Which Flagship Desktop DAC/Amp Is Right for You?Choose 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. Feature Questyle CMA Eighteen Master RME ADI-2 DAC FS FiiO K19 Core buying reason Flagship Current Mode desktop system Reference DAC with powerful DSP High-power desktop DAC/amp with HDMI DAC architecture ESS ES9038PRO RME reference conversion platform Dual ESS ES9039SPRO Maximum USB playback PCM 768kHz / DSD512 PCM 768kHz / DSD PCM 768kHz / DSD512 Headphone connection 4.4mm balanced and 6.35mm 6.35mm plus dedicated IEM output 4.4mm, 6.35mm and 4-pin XLR Analogue input Included for multi-source integration Not on ADI-2 DAC FS Not the main use case DSP / EQ focus Sound-path and hardware focused Extensive PEQ, loudness and crossfeed App and onboard DSP features HDMI ARC No No Yes Best choice when You want Questyle Current Mode sound and a flagship preamp/headphone hub You need precise headphone correction and measurement-style control You need HDMI, Bluetooth and maximum connection flexibility
$2,337.05
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IEAST AudioCast uNET
AudioCast uNET is a compact USB network adapter for compatible audio devices that need Wi-Fi or Ethernet access. It provides a discreet way to add stable app-controlled network connectivity without adding a full-size streamer. Why it stands outCompact USB network upgradeAdds network connectivity through a small USB-powered form factor designed for compatible audio equipment.Wi-Fi or wired EthernetChoose convenient wireless placement or a wired network connection for greater installation stability.Multi-room AudioCast integrationWorks within compatible AudioCast systems for grouped or independent room playback.Minimal system footprintAvoids adding another conventional desktop component where the host device provides the required USB interface. Best for Compatible USB-host audio devices Hidden custom installations AudioCast multi-room expansion Systems needing wired network reliability Compact equipment racks Not ideal for Amplifiers without a compatible USB host port Users needing standalone analog audio output Passive speakers requiring amplification Systems requiring HDMI ARC or Bluetooth audio EMiUZEK Buying Notes uNET is a network accessory, not a standalone DAC, streamer with analog output, or power amplifier. Confirm that the intended host device supports uNET through its USB port before ordering. Do not assume a generic computer USB connection will provide plug-and-play audio output. Frequently asked questionsCan uNET connect directly to an amplifier's RCA input?No. It does not provide a standalone RCA audio output.Can it drive speakers?No. It provides network connectivity only.Does it support Ethernet?Yes, wired networking is available.Does it work without a host device?No. It requires a compatible USB host audio product.Is it a USB DAC?No. It is a network adapter for compatible equipment.Can it join an AudioCast multi-room system?Yes, when used with a compatible host and configured through the supported platform. HOW TO CONNECTWi-Fi host upgradeSource: Streaming servicesConnection: Wi-FiOutput connection: USB to compatible hostTarget: Supported audio deviceWired network installationSource: Router or network switchConnection: EthernetOutput connection: USB to compatible hostTarget: Supported audio deviceMulti-room expansionSource: AudioCast control appConnection: Shared networkOutput connection: USB host integrationTarget: Compatible room audio system Technical Specifications Feature Specification Product type USB network audio adapter Network connections Wi-Fi and Ethernet Host connection USB Standalone analog output Not provided Speaker amplification Not provided Control Compatible AudioCast platform Additional Product Content📊 Comparison: Which Network Upgrade Is Right for You?Choose uNET when a compatible host only needs network connectivity; choose M5 when you need a standalone analog output, or Pro M20 when analog, optical and Ethernet outputs are required. Feature AudioCast uNET AudioCast M5 AudioCast Pro M20 Product type USB network accessory Standalone Wi-Fi streamer Standalone Wi-Fi/Bluetooth streamer Requires compatible host Yes No No Analog audio output No 3.5mm 3.5mm Optical output No No Yes Ethernet Yes No Yes
$59.00 $42.75
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sonos Sonos Amp
Sonos Amp is a powerful wireless streaming amplifier designed to bring Sonos smart audio features to passive speakers. With 125W per channel, HDMI ARC, AirPlay 2, and multi-room control, Sonos Amp combines high-quality amplification with seamless wireless music playback for home HiFi and entertainment systems. Why it stands out Powerful Stereo Amplification Sonos Amp delivers 125W per channel to drive a wide range of passive speakers with clean and dynamic sound. Complete Sonos Audio Integration Enjoy wireless streaming, multi-room playback, and simple control through the Sonos ecosystem. Home Theater Ready With HDMI ARC support, Sonos Amp can connect with compatible TVs and create an enhanced stereo or home theater setup. Flexible Speaker System Upgrade Connect your own passive speakers and transform them into a modern wireless audio system. Best for Passive speaker systems Home HiFi upgrades Sonos multi-room audio setups TV stereo systems Custom in-wall or in-ceiling speaker installations Not ideal for Users who already have a powerful amplifier Users looking for a portable audio solution Users needing Bluetooth-only playback Users wanting a standalone DAC without amplification EMiUZEK Buying Notes Sonos Amp is a streaming amplifier designed to directly power passive speakers. It delivers 125W × 2 output and does not require a separate power amplifier. Speaker impedance and power handling should match the amplifier specifications. For best multi-room performance, a stable WiFi or Ethernet connection is recommended. FAQ Can Sonos Amp power passive speakers? Yes. Sonos Amp includes a built-in amplifier and can directly drive passive speakers. How much power does Sonos Amp provide? Sonos Amp delivers 125W per channel into 8Ω speakers. Does Sonos Amp support AirPlay 2? Yes. It supports AirPlay 2 for compatible Apple devices. Can Sonos Amp connect to a TV? Yes. The HDMI ARC connection allows Sonos Amp to work with compatible TVs for stereo or home theater applications. Does Sonos Amp support Bluetooth? No. Sonos Amp uses WiFi-based streaming instead of Bluetooth audio playback. Can Sonos Amp work with in-wall or ceiling speakers? Yes. It is designed to work with many passive architectural speakers, including in-wall and in-ceiling models. Can Sonos Amp be used in a multi-room system? Yes. It can be combined with other Sonos products for synchronized multi-room audio. HOW TO CONNECT Passive Speaker Setup Source icon: Streaming ServiceSource: Sonos App / Music ServicesConnection: WiFi / EthernetOutput connection: Speaker OutputTarget icon: Passive SpeakersOutput: Wireless Stereo System Note: Power passive speakers directly with Sonos Amp. TV Audio Setup Source icon: TVSource: HDMI ARCConnection: HDMI CableOutput connection: Speaker OutputTarget icon: Passive SpeakersOutput: Home Theater System Note: Add Sonos smart audio to TV setups. Multi-Room Audio Setup Source icon: Music StreamingSource: Sonos SystemConnection: NetworkOutput connection: Multiple Sonos DevicesTarget icon: Multiple RoomsOutput: Whole-Home Audio System Note: Create synchronized audio zones. Technical Specifications Amplifier Product Type: Wireless Streaming Amplifier Amplifier Type: Class D Output Power: 125W × 2 @ 8Ω Speaker Connection: Passive Speakers Supported Inputs HDMI ARC RCA Line-In Ethernet WiFi Outputs Speaker Output Subwoofer Output 12V Trigger Output Wireless & Control AirPlay 2: Supported Sonos Multi-Room: Supported Sonos App Control: Supported Voice Control: Supported with compatible assistants General Application: Home HiFi / Home Theater / Multi-Room Audio Recommended System Setup Setup Connection Stereo System Sonos Amp → Passive Speakers TV Audio System TV HDMI ARC → Sonos Amp → Speakers Multi-Room System Sonos Amp → Sonos Network → Multiple Rooms What's in the box Sonos Amp ×1 Power Cable ×1 HDMI Cable ×1 User Manual ×1 Download Center Access product manuals, technical documents, and support resources. https://emiuzek.com/pages/download Additional Product Content Sonos Amp vs Sonos Port Feature Sonos Amp Sonos Port Product Type Streaming Amplifier Music Streamer Built-in Amplifier Yes No Output Power 125W × 2 N/A Passive Speakers Supported Requires External Amplifier HDMI ARC Yes No Best Focus Power passive speakers Upgrade existing HiFi systems
$699.00 $659.00
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Fosi Audio Fosi Audio K7
Fosi Audio K7 is a fully balanced desktop DAC and headphone amplifier designed for HiFi listening, gaming and communication.AK4493SEQ conversion, USB/optical/coaxial/Bluetooth inputs, microphone support and powerful 3.5mm and 4.4mm outputs make it a comprehensive desktop audio hub.Why it stands outFully balanced high-output designThe 4.4mm output provides at least 2.1W + 2.1W at 32Ω for compatible headphones.Audiophile digital architectureCombines an AK4493SEQ DAC, XMOS XU208 USB processor and TPA6120 headphone amplification.Gaming and microphone featuresA microphone input with noise reduction and physical EQ controls support gaming and online communication.Extensive source connectivityAccepts USB-C, optical, coaxial and Bluetooth aptX HD/LL sources.Best for Desktop HiFi headphone systems PC and console gaming TVs and projectors with digital output Powered speakers or amplifiers using RCA Not ideal for Directly driving passive speakers Portable battery-powered use Users requiring HDMI ARC EMiUZEK Buying Notes The 4.4mm output requires correctly wired balanced headphones; do not use an unsafe single-ended adapter. RCA is a line-level output for powered speakers or amplifiers, not passive speakers. Microphone compatibility and console operation depend on the selected input mode and system settings. Frequently asked questionsWhat is the maximum headphone output?The balanced output is rated at ≥2.1W + 2.1W at 32Ω; the 3.5mm output is ≥600mW + 600mW at 32Ω.Does K7 support Bluetooth?Yes, including aptX HD and aptX LL.Can it connect to a TV?Yes, through compatible optical or coaxial PCM output.Can it power passive speakers?No. Use its RCA output with powered speakers or a power amplifier.Does it support microphones?Yes, through the 3.5mm microphone input and compatible system setup.What is the maximum USB resolution?PCM up to 32-bit/384kHz and DSD256.HOW TO CONNECTPC gaming and communicationSource icon: computerSource: PC / MacConnection: USB-C audio + microphoneOutput connection: 3.5mm or 4.4mm headphone outputTarget icon: headphonesOutput: Gaming headset / headphonesTV headphone systemSource icon: tvSource: TV / projectorConnection: Optical or coaxial PCMOutput connection: Headphone outputTarget icon: headphonesOutput: Wired headphonesPowered speaker systemSource icon: streamerSource: PC / streamer / Bluetooth deviceConnection: USB, digital or BluetoothOutput connection: RCA line outputTarget icon: speakersOutput: Powered speakers or amplifierTechnical SpecificationsDigital architecture Feature Specification DAC AKM AK4493SEQ USB processor XMOS XU208 Headphone amplifier TPA6120 Maximum resolution PCM 32-bit / 384kHz; DSD256 Inputs USB-C; optical; coaxial; Bluetooth; 3.5mm microphone Outputs and performance Feature Specification Outputs 3.5mm single-ended; 4.4mm balanced; RCA 3.5mm rated output ≥600mW + 600mW @ 32Ω 4.4mm rated output ≥2.1W + 2.1W @ 32Ω SNR ≥121dB THD+N ≤0.0002% Power input DC 12V 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
$111.48 - $199.90
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Arylic RAKOSO HA400
RAKOSO HA400 is a professional 4-zone network streaming amplifier designed for whole-home audio systems, commercial background music installations, and multi-room speaker setups. With four independent amplifier zones, network streaming support, AirPlay 2, Spotify Connect, multi-room control, and flexible audio inputs and outputs, HA400 provides a complete solution for powering and managing multiple speaker areas from a single device. Each zone delivers 50W × 2 stereo amplification at 8Ω or 100W bridge mode output at 4Ω, allowing direct connection to passive speakers without additional power amplifiers. Why it stands out Four-Zone Amplification System HA400 combines four independent streaming amplifiers into one centralized audio system. Four separate audio zones 50W × 2 stereo output per zone Bridge mode up to 100W Direct connection to passive speakers Complete Whole-Home Audio Solution Control multiple rooms from one device. Play different music in different zones Synchronize all zones together Manage playback through the 4STREAM app Suitable for residential and commercial installations Modern Network Streaming HA400 supports popular streaming platforms and network protocols. AirPlay 2 Spotify Connect DLNA UPnP Qplay Internet music services Professional Installation Features Designed for advanced audio installations. Rack-mountable design RS232 smart control integration 12V trigger support Multiple digital and analog connections Best for Whole-home audio systems Multi-room speaker installations Commercial background music systems Restaurants, offices, and retail spaces Professional custom audio projects Not ideal for Users looking for a simple single-room amplifier Desktop audio systems Users needing a portable streaming device Users without multiple speaker zones EMiUZEK Buying Notes RAKOSO HA400 is a multi-zone streaming amplifier with built-in amplification. Each zone can directly drive passive speakers. External power amplifiers are not required for normal installations. Speaker impedance and wiring should match the amplifier output specifications. Designed mainly for whole-home and professional installations rather than simple personal audio setups. FAQ Can RAKOSO HA400 directly power passive speakers? Yes. HA400 includes four built-in amplifier zones and can directly drive passive speakers. Typical setup: Streaming Source → HA400 → Passive Speakers How many rooms can RAKOSO HA400 control? HA400 supports four independent audio zones. Each zone can play different content or synchronize with other zones. Can different rooms play different music at the same time? Yes. Each zone can operate independently through the 4STREAM application. Does RAKOSO HA400 support AirPlay 2? Yes. HA400 supports AirPlay 2 for wireless streaming from compatible Apple devices. Does RAKOSO HA400 support Spotify Connect? Yes. HA400 supports Spotify Connect for direct network streaming. What speakers can be used with RAKOSO HA400? HA400 supports passive speakers connected directly to each amplifier zone. Each zone provides: 50W × 2 @ 8Ω stereo mode 100W bridge mode @ 4Ω Can RAKOSO HA400 be installed in a rack? Yes. HA400 is designed for professional installations and supports rack mounting. Can RAKOSO HA400 integrate with smart home systems? Yes. HA400 supports RS232 control for integration with compatible automation systems. HOW TO CONNECT Whole Home Audio Setup Source icon: Streaming ServicesSource: AirPlay / Spotify / Network MusicConnection: WiFi / EthernetOutput connection: Speaker OutputTarget icon: speakersOutput: Multiple Passive Speakers Note: Build a complete multi-room audio system. Individual Zone Setup Source icon: smartphoneSource: Streaming AppConnection: NetworkOutput connection: Zone Speaker OutputTarget icon: speakersOutput: Passive Speakers Note: Control each room independently. Professional Installation Setup Source icon: Smart Home ControllerSource: Automation SystemConnection: RS232Output connection: HA400Target icon: Multi-zone Speakers Note: Integrate HA400 into custom audio systems. Technical Specifications Amplifier Feature Specification Product Type 4-Zone Network Streaming Amplifier Amplifier Type Class D Number of Zones 4 Output Power 50W × 2 @ 8Ω per zone Bridge Mode 100W @ 4Ω per zone Speaker Output Passive Speakers Streaming & Connectivity Feature Specification WiFi 2.4GHz Ethernet RJ45 Bluetooth Supported Streaming Protocols AirPlay 2 / Spotify Connect / DLNA / UPnP / Qplay Multi-Room Supported Audio Inputs Feature Specification Analog Input RCA Digital Input Optical / Coaxial USB USB Storage Playback Audio Outputs Feature Specification Speaker Output 4 Zones Pre Output RCA Digital Output Optical / Coaxial Subwoofer Output Supported Audio Performance Feature Specification Audio Decode Up to 24-bit / 192kHz Supported Formats FLAC / MP3 / AAC / AAC+ / ALAC / APE / WAV Frequency Response 20Hz–20kHz THD+N 0.03% SNR 93dB Control Feature Specification App Control 4STREAM App Smart Home Control RS232 Trigger 12V Trigger Recommended System Setup Setup Connection Whole Home Audio Network → HA400 → Multiple Speaker Zones Commercial Audio Streaming Source → HA400 → Ceiling Speakers Multi-Room Setup 4 Zones → Different Rooms What's in the box RAKOSO HA400 ×1 Rack Mount Accessories ×1 Power Cable ×1 User Manual ×1 EMIUZEK Download Center Access product manuals, firmware updates, and additional support resources. RAKOSO HA400 manuals and downloads: https://emiuzek.com/pages/download Additional Product Content RAKOSO HA400 vs RAKOSO H400 Feature HA400 H400 Product Position 4-Zone Streaming Amplifier 4-Zone Streaming Preamplifier Built-in Amplifier Yes No Speaker Output Yes No External Amplifier Required No Yes Zones 4 4 AirPlay 2 Yes Yes Spotify Connect Yes Yes Best Use Complete multi-room speaker system Existing amplifier installations
$1,106.38 - $2,499.00
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sonos Sonos Port
Sonos Port is a wireless music streamer designed to connect traditional audio equipment to the Sonos ecosystem. With analog and digital outputs, AirPlay 2 support, and seamless multi-room control, Sonos Port allows existing amplifiers, receivers, and powered speakers to become part of a modern connected audio system. Why it stands out Bring Traditional Audio Into Sonos Sonos Port upgrades existing amplifiers and speakers with wireless streaming and multi-room audio capabilities. Flexible HiFi Connectivity With RCA analog output, digital output, and line-in support, Port integrates easily with a wide range of audio equipment. Seamless Multi-Room Control Enjoy synchronized music throughout your home using the Sonos ecosystem and intuitive app control. Designed for Existing HiFi Systems Port provides an easy way to modernize a traditional stereo setup without replacing your existing amplifier or speakers. Best for Existing HiFi amplifier systems Sonos multi-room audio expansion Active speaker systems Vinyl systems connected to Sonos Users upgrading traditional stereo equipment Not ideal for Users needing a built-in amplifier Users looking for a Bluetooth-only receiver Users wanting a standalone high-end DAC Users without existing audio equipment EMiUZEK Buying Notes Sonos Port is a streaming device, not a power amplifier. It requires an external amplifier, receiver, or powered speakers. It does not directly drive passive speakers. For vinyl playback, connect a turntable through a phono preamp or compatible amplifier with line output. A wired Ethernet connection is recommended for stable multi-room performance. FAQ Does Sonos Port have a built-in amplifier? No. Sonos Port is a streamer and requires an external amplifier or powered speakers. Does Sonos Port support AirPlay 2? Yes. It supports AirPlay 2 for compatible Apple devices. Can Sonos Port connect to a traditional amplifier? Yes. Connect Port to an amplifier or receiver through analog RCA or digital output to add Sonos streaming capability. Can Sonos Port connect to a turntable? Yes. A turntable can be connected through the Line-In connection of a compatible Sonos system. Does Sonos Port support Bluetooth? No. Sonos Port focuses on WiFi-based streaming rather than Bluetooth playback. Can Sonos Port be used with active speakers? Yes. The analog output can connect directly to compatible powered speakers. Does Sonos Port support multi-room audio? Yes. It can be integrated into a Sonos multi-room system with other Sonos products. HOW TO CONNECT HiFi Amplifier Setup Source icon: Streaming ServiceSource: Sonos App / Music ServicesConnection: WiFi / EthernetOutput connection: RCA / Digital OutputTarget icon: AmplifierOutput: Wireless HiFi System Note: Add Sonos streaming features to traditional amplifiers. Active Speaker Setup Source icon: Sonos SystemSource: Music StreamingConnection: NetworkOutput connection: RCATarget icon: Powered SpeakersOutput: Wireless Speaker System Note: Connect directly to active speakers. Vinyl Setup Source icon: TurntableSource: Analog AudioConnection: Line-InTarget icon: Sonos SystemOutput: Multi-Room Vinyl Playback Note: Share vinyl playback across Sonos rooms. Technical Specifications Audio Product Type: Wireless Music Streamer Audio Output: RCA Analog / Coaxial Digital Audio Input: RCA Line-In Digital Output: Coaxial DAC: Built-in Sonos Digital Audio Processing Connectivity WiFi: Supported Ethernet: Supported AirPlay 2: Supported Sonos Multi-Room: Supported 12V Trigger Output: Supported Control Control Method: Sonos App Voice Control: Supported through compatible voice assistants General Power: AC Power Application: HiFi System Upgrade / Multi-Room Audio Recommended System Setup Setup Connection Traditional HiFi Sonos Port → Amplifier → Speakers Active Speakers Sonos Port → Powered Speakers Vinyl System Turntable → Sonos Port → Sonos Rooms What's in the box Sonos Port ×1 Power Cable ×1 RCA Cable ×1 Ethernet Cable ×1 User Manual ×1 Download Center Access product manuals, technical documents, and support resources. https://emiuzek.com/pages/download Additional Product Content Sonos Port vs Sonos Amp Feature Sonos Port Sonos Amp Product Type Music Streamer Streaming Amplifier Built-in Amplifier No Yes Passive Speaker Support No Yes RCA Output Yes Yes Sonos Multi-Room Yes Yes Best Focus Upgrade existing HiFi systems Power passive speakers
$449.00 $399.00
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Fosi Audio Fosi Audio ZD3
Fosi Audio ZD3 is a fully balanced desktop DAC and preamplifier for computers, televisions, wireless sources and dedicated digital transports.The ES9039Q2M platform, HDMI ARC, USB, Bluetooth, XLR/RCA outputs and bypass mode make it a versatile digital hub for modern HiFi systems.Why it stands outFour reasons this product deserves a place in a well-planned audio system.ES9039Q2M Balanced ConversionThe flagship ESS DAC architecture supports high-resolution decoding and balanced analog output.HDMI ARC for Television AudioConnect a compatible TV directly and control a stereo system without relying on a separate AV receiver.Variable or Fixed OutputUse preamp mode for direct volume control or bypass mode for a fixed-level connection to another preamplifier.Trigger and Remote Integration12V trigger input/output, OLED display and remote control streamline everyday system operation.Best for TV-to-HiFi upgrades using HDMI ARC Balanced power amplifiers such as ZA3 or V3 Mono Computer USB audio systems Bluetooth and multi-source digital systems Active speakers with XLR or RCA input Not ideal for Users needing built-in speaker amplification Headphone listeners without a separate headphone amplifier Analog-only sources such as a turntable Systems requiring Wi-Fi network streaming apps inside the DAC EMiUZEK Buying Notes ZD3 is a DAC/preamp, not a speaker power amplifier; connect it to active speakers or a separate amplifier. Use bypass only when downstream equipment provides volume control, because bypass sends fixed-level output. HDMI is ARC audio input rather than a general HDMI video switch or HDMI output. Frequently Asked QuestionsCan the ZD3 drive passive speakers?No. Connect its XLR or RCA output to a power amplifier before passive speakers.Can it connect directly to a television?Yes, through a compatible HDMI ARC connection. Configure the television for supported digital audio output.Does it have a headphone output?No. Add a separate headphone amplifier if headphone listening is required.Can it connect to active speakers?Yes. Use XLR or RCA output and operate the ZD3 in preamp mode for volume control.What is bypass mode?It bypasses variable preamp control and sends fixed-level output to a downstream preamp or integrated amplifier.Does Bluetooth transmit to headphones?No. Bluetooth is an input for receiving audio from a source device.Does it support high-resolution USB audio?Yes, up to PCM 32-bit/768kHz and DSD512 over USB with compatible hardware and software.HOW TO CONNECTTV stereo systemSource: TelevisionConnection: HDMI ARCOutput: XLR or RCATarget: Power amplifier or active speakersNote: Select a compatible PCM output setting on the TV if required.Computer audioSource: PC / MacConnection: USBOutput: XLR or RCATarget: Power amplifier, headphone amp or active speakersNote: Some Windows configurations require the Fosi USB driver.Wireless audio systemSource: Phone / tabletConnection: Bluetooth 5.0Output: XLR or RCATarget: Amplifier or active speakersNote: Bluetooth is receive-only on the ZD3.Technical SpecificationsCore Architecture Feature Specification Product Type Balanced DAC / preamplifier DAC ESS ES9039Q2M USB Interface XMOS XU316 Bluetooth Chip QCC3031 Op-Amp LME49720; swappable design Digital Audio Feature Specification USB Maximum PCM 32-bit/768kHz; DSD512 Optical / Coaxial Maximum PCM 24-bit/192kHz Bluetooth Maximum PCM 24-bit/48kHz Bluetooth Codecs aptX HD, aptX, AAC, SBC Bluetooth Version 5.0 Inputs and Outputs Feature Specification Inputs USB, HDMI ARC, coaxial, optical, Bluetooth Outputs Balanced XLR; RCA XLR Output Level 5Vrms RCA Output Level 2.5Vrms Trigger 12V trigger input and output Measured Performance Feature Specification SINAD 126dB SNR ≥126dB THD+N <0.00008% Dynamic Range ≥123dB Noise Floor ≤2μV Power Supply DC 12V/1.5A Recommended System Setup Setup Connection TV HiFi TV → HDMI ARC → ZD3 → amplifier → passive speakers Balanced desktop Computer → USB → ZD3 → XLR active speakers Wireless system Phone → Bluetooth → ZD3 → amplifier or active speakers Additional Product Content Feature ZD3 ZH3 GR40 Product Position Balanced DAC / preamp DAC / headphone amp / preamp Tube DAC / headphone amp DAC Chip ES9039Q2M AKM AK4493SEQ Not specified USB Maximum PCM 768kHz / DSD512 PCM 768kHz / DSD512 Product-dependent lower tier HDMI ARC Yes No No Bluetooth Input Yes No Yes Headphone Output No 4.4mm, 6.35mm 3.5mm Analog Input No RCA No Balanced Line Output XLR XLR No Remote Control Yes Yes No Best Use TV and balanced amplifier hub Complete desktop/headphone hub Compact tube-flavoured desktop audio
$179.90
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Fosi Audio Fosi Audio BT20A
Fosi Audio BT20A is a compact two-channel Class-D integrated amplifier for passive speakers, with Bluetooth and RCA inputs.It combines straightforward wireless playback, bass and treble adjustment, and up to 100 W per channel maximum output in a small desktop-friendly chassis. Why it stands outCompact passive-speaker amplifierProvides stereo speaker amplification without the size and complexity of a full-size receiver.Bluetooth and wired playbackSwitch between Bluetooth 5.0 streaming and an analog RCA source.Front-panel tone controlIndependent bass and treble knobs make quick system tuning simple. Simple everyday operationA compact front panel keeps power, volume, bass and treble adjustment immediately accessible without menus or an app.Best for Desktop passive-speaker systems Bookshelf speakers in small and medium rooms Simple Bluetooth stereo systems TVs or streamers with analog line output Not ideal for Systems requiring HDMI ARC, optical or USB input Users needing a subwoofer output Headphone listening EMiUZEK Buying Notes BT20A powers passive speakers; it is not intended as an input for powered speakers. The quoted 100 W × 2 is the manufacturer's maximum specification and depends on load and power supply. It has no phono stage, so most turntables require a phono preamplifier or line-level output. Frequently asked questionsCan it drive passive speakers directly?Yes. It supports 2–8 Ω passive speakers through the rear binding posts.Can it connect to active speakers?No dedicated pre-output is provided. Use BT20A to power passive speakers.Does it have a subwoofer output?No.Can I connect a turntable?Only when the turntable has a built-in phono stage or an external phono preamplifier is used.Does it support aptX?The official specification lists Bluetooth 5.0 but does not specify aptX support.Can I connect a TV?Yes, when the TV provides compatible analog audio output; there is no optical or HDMI input. HOW TO CONNECTBluetooth speaker systemSource icon: phoneSource: Phone / tabletConnection: Bluetooth 5.0Output connection: Speaker terminalsTarget icon: speakersOutput: Passive speakersWired stereo systemSource icon: streamerSource: Streamer / DAC / TV analog outputConnection: RCAOutput connection: Speaker terminalsTarget icon: speakersOutput: Passive speakers Turntable stereo systemSource icon: turntableSource: Turntable with built-in phono stage or external phono preamplifierConnection: RCA line inputOutput connection: Speaker terminalsTarget icon: speakersOutput: Passive speakersNote: Do not connect a phono-level turntable directly unless a compatible phono preamplifier is used.Technical SpecificationsInputs Feature Specification Bluetooth 5.0 Included RCA line input Included Outputs Feature Specification Stereo speaker binding posts Included Amplification Feature Specification Amplifier Architecture Class D Amplifier Chipset Dual TI TPA3116D2 Maximum Output Power 100 W × 2 Speaker Impedance 2–8 Ω Frequency Response 20 Hz–20 kHz (±1 dB) SNR ≥98 dB THD ≤0.5% Connectivity and power Feature Specification Bluetooth Range up to approximately 15 m / 50 ft without obstacles DC Input Range 12–24 V Supplied Power Adapter 24 V / 4.5 A Additional Product ContentComparison: BT20A or BT20A Pro? Feature BT20A BT20A Pro Amplifier chip Dual TPA3116D2 TPA3255 Maximum output 100 W × 2 300 W × 2 at 4 Ω Pre-out No 3.5 mm variable pre-out Best use Simple compact stereo Higher-output expandable stereo
$78.08 - $79.90
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Fosi Audio Fosi Audio BT20A Pro
Fosi Audio BT20A Pro is a compact Bluetooth stereo integrated amplifier built around the TI TPA3255 for passive speakers.It adds RCA input, a variable 3.5 mm pre-out, bass and treble controls, replaceable op-amps and multiple power-supply options for a flexible desktop or room stereo system. Why it stands outTPA3255 stereo amplificationDelivers high-efficiency Class-D power with low specified distortion in a compact chassis.Variable pre-out expansionThe 3.5 mm pre-out can feed compatible powered speakers, a powered subwoofer or another amplifier.Replaceable op-ampsSocketed NE5532 op-amps allow experienced users to tailor the analog stage with compatible DIP8 replacements.Flexible power configurationsAvailable power-supply choices let buyers balance system output, size and cost. Best for Desktop and bookshelf passive-speaker systems Compact stereo systems with a powered subwoofer Bluetooth and RCA source switching Users interested in compatible op-amp rolling Not ideal for Systems requiring HDMI ARC, optical or USB input Users needing a headphone output Turntables without a phono preamplifier EMiUZEK Buying Notes Maximum power depends on the selected supply and speaker load; choose the power-supply variant appropriate for the system. The 3.5 mm connector is a pre-out, not a headphone jack. Bluetooth takes input priority; disconnect Bluetooth when using RCA if the wired source is not heard. Frequently asked questionsCan it power passive speakers?Yes. It supports 2–8 Ω passive speakers.Can it connect to a powered subwoofer?Yes, through the variable 3.5 mm pre-out using the appropriate cable.Is the pre-out a headphone output?No.Can I connect a turntable?Yes only through a turntable with line output or an external phono stage.Does it support aptX?No. The official documentation specifies SBC/AAC and states that aptX variants are not supported.Can RCA and Bluetooth play simultaneously?No. Only one input mode is used at a time. HOW TO CONNECTPassive speaker systemSource icon: streamerSource: Streamer / DAC / phoneConnection: RCA or BluetoothOutput connection: Speaker terminalsTarget icon: speakersOutput: Passive speakers2.1 stereo systemSource icon: streamerSource: Streamer / DACConnection: RCAOutput connection: Speaker terminals + 3.5 mm pre-outTarget icon: speakersOutput: Passive speakers + powered subwoofer Pre-out expansion systemSource icon: streamerSource: Streamer / DAC / phoneConnection: RCA or BluetoothOutput connection: 3.5 mm variable pre-outTarget icon: speakersOutput: Powered speakers, powered subwoofer or downstream amplifierNote: Confirm input compatibility and begin with the volume set low.Technical SpecificationsInputs Feature Specification Bluetooth 5.0 Included RCA line input Included Outputs Feature Specification Stereo speaker binding posts Included 3.5 mm variable pre-out Included Amplification Feature Specification Amplifier Chip TI TPA3255 Maximum Output Power 300 W × 2 at 4 Ω Speaker Impedance 2–8 Ω THD ≤0.005% SNR ≥108 dB Frequency Response 20 Hz–20 kHz (±1.2 dB) Socketed Op-Amps 2 × NE5532 Connectivity and power Feature Specification Bluetooth Codecs SBC / AAC Bluetooth Range up to 50 ft without obstacles DC Input Range 24–48 V Power Supply Options 32 V / 5 A or 48 V / 5 A, depending on variant Dimensions approximately 5 × 5 × 1 in Additional Product ContentComparison: BT20A or BT20A Pro? Feature BT20A BT20A Pro Amplifier chip Dual TPA3116D2 TPA3255 Maximum output 100 W × 2 300 W × 2 at 4 Ω Pre-out No 3.5 mm variable pre-out Best use Simple compact stereo Higher-output expandable stereo
$89.25 - $119.90
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Arylic RAKOSO H400
Arylic RAKOSO H400 is a professional 4-zone network streaming preamplifier designed for whole-home audio systems, commercial installations, and advanced multi-room setups. With four independent streaming zones, AirPlay 2, Spotify Connect, multi-room control, high-resolution audio decoding, and flexible analog and digital outputs, H400 provides a centralized solution for managing multiple audio areas with external amplifiers or active speakers. Why it stands out Four-Zone Independent Streaming System H400 integrates four independent streaming zones into one rack-mount audio controller. Control up to four audio zones Play different music in different rooms Synchronize multiple zones together Manage all zones through the 4STREAM app Professional Multi-Room Audio Control Designed for advanced home and commercial audio installations. Whole-house audio distribution External amplifier integration Active speaker compatibility Rack-mount installation Flexible Digital and Analog Connectivity H400 supports various audio sources and output configurations. RCA analog inputs and outputs Optical input/output Coaxial input/output USB playback Ethernet network connection Smart Home Integration H400 supports professional automation environments. RS232 control interface 12V trigger output Integration with smart home systems Best for Whole-home multi-room audio systems Luxury residential installations Commercial background music systems Multi-zone amplifier setups Professional audio integration projects Not ideal for Users looking for a simple Bluetooth receiver Users needing a built-in amplifier Users wanting a single-room desktop streamer Users without external amplifiers or active speakers EMiUZEK Buying Notes Arylic RAKOSO H400 is a streaming preamplifier, not a power amplifier. Passive speakers require external amplifiers. Each zone requires an amplifier or active speaker connection. H400 is designed for multi-zone installations rather than simple home audio upgrades. For direct speaker driving, consider a multi-zone amplifier such as HA400. FAQ Can Arylic RAKOSO H400 directly power passive speakers? No. H400 is a preamplifier and network streamer. It requires external power amplifiers to drive passive speakers. Typical setup: H400 → Power Amplifier → Passive Speakers How many audio zones does H400 support? H400 supports four independent audio zones. Each zone can operate separately or synchronize with other zones. Can different rooms play different music at the same time? Yes. Each zone can be controlled independently through the 4STREAM application. Does Arylic RAKOSO H400 support AirPlay 2? Yes. H400 supports AirPlay 2 for wireless streaming from compatible Apple devices. Does Arylic RAKOSO H400 support Spotify Connect? Yes. H400 supports Spotify Connect for direct streaming without Bluetooth compression. Can Arylic RAKOSO H400 work with active speakers? Yes. Each zone can connect directly to compatible active speakers through audio outputs. Can Arylic RAKOSO H400 be installed in a rack? Yes. H400 uses a compact 1U rack-mount chassis suitable for professional installations. HOW TO CONNECT Multi-Zone Amplifier Setup Source icon: Streaming ServicesSource: AirPlay / Spotify / Network MusicConnection: WiFi / EthernetOutput connection: Zone OutputTarget icon: amplifierOutput: Multi-Zone Amplifiers + Speakers Note: Build a whole-home audio distribution system. Active Speaker Setup Source icon: smartphoneSource: Streaming ServicesConnection: WiFi / EthernetOutput connection: RCA OutputTarget icon: speakersOutput: Active Speakers Note: Use H400 as a multi-room streaming controller. Rack Audio Installation Source icon: NetworkSource: Streaming ServicesConnection: EthernetOutput connection: Rack Audio SystemTarget icon: amplifiersOutput: Professional Audio Installation Note: Designed for larger residential and commercial systems. Technical Specifications Streaming & Connectivity Feature Specification Product Type 4-Zone Network Streaming Preamplifier WiFi 2.4GHz WiFi Ethernet RJ45 10/100M Bluetooth Bluetooth 5.0 Receiver Streaming Protocols AirPlay 2 / Spotify Connect / DLNA / UPnP / Qplay Multi-Room Supported Audio Processing Feature Specification DAC TI DAC Audio Decoding Up to 24-bit / 192kHz Supported Formats FLAC / MP3 / AAC / AAC+ / ALAC / APE / WAV Frequency Response 20Hz–20kHz Audio Inputs Feature Specification Analog Input RCA Digital Input Optical / Coaxial USB USB Host Playback Audio Outputs Feature Specification Zone Output 4 Independent RCA Outputs Digital Output Optical / Coaxial Trigger Output 12V Trigger Control Feature Specification App Control 4STREAM App Smart Home Control RS232 Rack Installation 1U Rack Mount General Feature Specification Power Input 12V / 2A Dimensions 43 × 20 × 4.5 cm Weight Approx. 3kg Recommended System Setup Setup Connection Home Multi-Room H400 → Amplifiers → Speakers Active Speaker Zones H400 → Active Speakers Rack Installation H400 → Multi-Channel Amplifier → Multiple Rooms What's in the box Arylic RAKOSO H400 ×1 Ethernet Cable ×1 Power Adapter ×1 Rack Mount Brackets ×2 User Manual ×1 EMIUZEK Download Center Access product manuals, firmware updates, and additional support resources. Arylic RAKOSO H400 manuals and downloads: https://emiuzek.com/pages/download Additional Product Content Arylic RAKOSO H400 vs Arylic HA400 Feature RAKOSO H400 HA400 Product Position 4-Zone Streaming Preamplifier 4-Zone Streaming Amplifier Built-in Amplifier No Yes Speaker Output No Yes External Amplifier Required Yes No Zones 4 Zones 4 Zones AirPlay 2 Yes Yes Spotify Connect Yes Yes Rack Installation 1U 2U Best Use Professional installations with existing amplifiers Complete multi-room speaker systems
$855.57 - $999.00
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Arylic Arylic BT10
Arylic BT10 is a compact Bluetooth audio transmitter designed to add wireless audio transmission to TVs, computers, and traditional audio sources. With Bluetooth 5.2, aptX HD support, optical input, analog input, USB audio connection, and dual-device transmission capability, BT10 allows you to connect wired audio sources with Bluetooth headphones, speakers, and other wireless audio devices. Why it stands out Turn Any Audio Source Into Wireless Audio BT10 adds Bluetooth transmission capability to devices without built-in Bluetooth output. Bluetooth 5.2 transmission Connect Bluetooth headphones or speakers Low-latency audio support Compact plug-and-play design Dual Bluetooth Transmission BT10 can transmit audio to multiple Bluetooth devices simultaneously. Connect up to two Bluetooth headphones or speakers Share TV or music playback wirelessly Flexible listening options Multiple Audio Input Options BT10 supports different audio sources: Optical digital input 3.5mm analog input USB-C audio connection USB storage playback Designed for TV and Personal Listening BT10 provides a simple solution for private and wireless listening. Watch TV with Bluetooth headphones Add wireless audio to computers Connect traditional audio sources to Bluetooth devices Best for TVs without built-in Bluetooth transmission Bluetooth headphone users Desktop computer audio setups Private nighttime listening Adding wireless capability to traditional audio sources Not ideal for Users looking for a Bluetooth receiver for old amplifiers Users needing WiFi streaming services Users wanting a network music player Users requiring built-in speaker amplification EMiUZEK Buying Notes Arylic BT10 is a Bluetooth transmitter only. It sends audio from wired sources to Bluetooth devices. It does not receive Bluetooth audio from smartphones. For receiving Bluetooth audio into an amplifier or active speaker, choose a Bluetooth receiver instead. Optical connection is recommended for compatible TVs and digital sources. FAQ What is Arylic BT10 used for? BT10 is a Bluetooth transmitter that sends audio from wired sources such as TVs, computers, and audio devices to Bluetooth headphones or speakers. Can Arylic BT10 connect to Bluetooth headphones? Yes. BT10 can transmit audio to compatible Bluetooth headphones and speakers. Can Arylic BT10 connect to two Bluetooth devices at the same time? Yes. BT10 supports dual Bluetooth transmission, allowing connection with up to two Bluetooth audio devices. Can Arylic BT10 be used with a TV? Yes. BT10 can connect to compatible TV audio outputs and transmit sound wirelessly to Bluetooth headphones or speakers. Does Arylic BT10 support aptX HD? Yes. BT10 supports aptX, aptX HD, aptX Low Latency, aptX Adaptive, AAC, and SBC codecs. Can Arylic BT10 receive Bluetooth audio from a phone? No. BT10 works as a Bluetooth transmitter and does not function as a Bluetooth receiver. What is the difference between Arylic BT10 and BR10? BT10 is a Bluetooth transmitter: Audio Source → BT10 → Bluetooth Headphones/Speakers BR10 is a Bluetooth receiver: Phone → BR10 → Amplifier/Active Speakers HOW TO CONNECT TV Bluetooth Headphone Setup Source icon: TVSource: TelevisionConnection: Optical / 3.5mm Audio OutputOutput connection: Bluetooth TransmissionTarget icon: headphonesOutput: Bluetooth Headphones Note: Enjoy private wireless TV listening. Computer Audio Setup Source icon: computerSource: PC / MacConnection: USB / 3.5mm AudioOutput connection: Bluetooth TransmissionTarget icon: headphonesOutput: Bluetooth Headphones Note: Add wireless audio transmission to computers. Audio Device Setup Source icon: audio deviceSource: CD Player / Media PlayerConnection: Optical / Analog OutputOutput connection: Bluetooth TransmissionTarget icon: speakersOutput: Bluetooth Speakers Technical Specifications Bluetooth Feature Specification Bluetooth Version Bluetooth 5.2 Bluetooth Mode Transmitter (TX) Transmission Devices Up to 2 Bluetooth Devices Codec Support aptX / aptX HD / aptX LL / aptX Adaptive / AAC / SBC Transmission Range Up to 15m Audio Inputs Feature Specification Optical Input Up to 24-bit / 192kHz PCM Analog Input 3.5mm Line Input USB-C USB DAC Connection USB Host USB Storage Playback 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 TV + Bluetooth Headphones TV → BT10 → Headphones PC + Wireless Headphones PC → BT10 → Headphones Audio Player + Bluetooth Speaker Audio Source → BT10 → Speaker What's in the box Arylic BT10 ×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 BT10 manuals and downloads: https://emiuzek.com/pages/download Additional Product Content Arylic BT10 vs Arylic BR10 Feature Arylic BT10 Arylic BR10 Product Position Bluetooth Transmitter Bluetooth Receiver Main Function Send audio to Bluetooth devices Receive audio from Bluetooth devices Signal Direction Audio Source → Bluetooth Device Smartphone → Audio System Bluetooth Mode TX RX Best Use TV headphones / wireless listening Upgrade traditional speakers with Bluetooth
$45.00 - $58.90
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Fosi Audio Fosi Audio Q6
Fosi Audio Q6 is a compact fixed-output desktop DAC for converting USB-C, optical or coaxial digital sources to RCA analog audio and sub-out.Its AK4493S and XMOS XU316 chipset supports PCM 32-bit/768kHz and DSD512 over USB while delivering 121dB SNR for a clean stereo system upgrade.Why it stands outAKM desktop conversionThe AK4493S DAC and premium supporting chipset target high-resolution, low-distortion stereo playback.High-resolution USB audioUSB supports PCM up to 32-bit/768kHz and native DSD512.Three digital source inputsUSB-C, optical and coaxial connect computers, TVs, streamers and CD transports.RCA plus sub-outAnalog RCA and sub-out simplify stereo or 2.1 integration.Best for Digital streamers and CD transports Computer-based HiFi systems TV optical PCM into an amplifier Fixed-output DAC systems with downstream volume control Not ideal for Headphone listening without a separate headphone amplifier Users needing built-in volume control or preamplification Analog sources such as turntables EMiUZEK Buying Notes Q6 is a fixed-output DAC, not a preamplifier; control volume downstream. It has no headphone output and requires an amplifier, headphone amp or powered speakers. The sub-out is line level and requires a powered subwoofer. Frequently asked questionsCan Q6 drive headphones?No. Add a separate headphone amplifier.Does it control volume?No. It is a fixed-output DAC, so use an amplifier, preamp or powered-speaker volume control.Can it connect to a turntable?No. It accepts digital inputs only.Can it connect to a TV?Yes, by optical or coaxial PCM audio.What does sub-out connect to?A powered subwoofer with a compatible line input.Does USB support DSD?Yes, up to DSD512 from a compatible source and playback setup.HOW TO CONNECTStreamer systemSource: Digital streamerConnection: Optical or coaxialOutput: RCATarget: Integrated amplifierNote: Control volume at the amplifier.Computer HiFiSource: PC, Mac or tabletConnection: USB-C audioOutput: RCATarget: Amplifier or powered speakersNote: Use compatible USB playback settings.2.1 systemSource: Digital sourceConnection: USB, optical or coaxialOutput: RCA + sub-outTarget: Amplifier + powered subwooferNote: Q6 output is fixed; manage levels downstream.Technical SpecificationsAudio performance Feature Specification DAC / USB chipset AK4493S / XMOS XU316 USB maximum PCM 32-bit / 768kHz; DSD512 Optical / coaxial Up to 32-bit / 192kHz SNR / Dynamic range ≥121dB / 121dB THD <0.00012% Connections and power Feature Specification Inputs USB-C, optical, coaxial Outputs RCA, sub-out Other components OPA1612, NE5532DR Power supply 5V / 2A Volume control No; fixed output Recommended System Setup Setup Connection Streamer system Streamer → Q6 → Integrated amplifier Computer system Computer → Q6 → Powered speakers 2.1 system Digital source → Q6 → Amplifier + powered subwoofer Additional Product ContentFosi Audio product comparisonCompare the models by the differences that most affect system matching and everyday use. Feature Q6 Q4 ZD3 Product position Fixed-output stereo DAC DAC + headphone amp / volume control Balanced DAC / preamp DAC chip AK4493S 97220-based chipset ES9039Q2M USB maximum 32-bit / 768kHz, DSD512 24-bit / 96kHz 32-bit / 768kHz, DSD512 Other inputs Optical, coaxial Optical, coaxial HDMI ARC, optical, coaxial, Bluetooth Analog outputs RCA, sub-out RCA RCA, XLR Headphone output No 3.5mm No Volume control No Yes Yes with bypass Balanced output No No Yes, XLR SNR ≥121dB ≥105dB ≥126dB Best use Simple high-performance DAC Entry headphones and desktop Flexible balanced TV/HiFi hub
$85.00 - $105.48
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Fosi Audio Fosi Audio MC331
Fosi Audio MC331 is a compact tube integrated amplifier combining digital and analog source selection, speaker amplification, headphone listening and preamplifier output.Its replaceable tubes, illuminated VU meter, remote control and 105W × 2 maximum output at 4Ω make it a flexible desktop or bookshelf-speaker hub.Why it stands outAll-in-one audio hubCombines a DAC, integrated speaker amplifier, preamplifier and headphone amplifier in one compact chassis.Five source inputsAccepts Bluetooth, USB, optical, coaxial and RCA sources with remote input switching.Tube character with visual appealReplaceable 5654W-family tubes and a warm VU meter add adjustable tube character and a retro presentation.Flexible system expansionDrives passive speakers while pre-out and 3.5mm headphone outputs support additional listening configurations.Best for Desktop and small-room passive speaker systems Users switching between computer, TV, Bluetooth and analog sources Headphone and speaker listening from one compact component Listeners who enjoy replaceable tubes and VU-meter styling Not ideal for Turntables without a built-in or external phono preamp Systems requiring HDMI ARC Passive subwoofers that need a dedicated powered subwoofer channel EMiUZEK Buying Notes MC331 is an integrated amplifier and can directly drive 4–8Ω passive speakers. Its RCA input is line level; a conventional turntable requires a phono preamp. Pre-out is for an active subwoofer or downstream amplifier; it is not a passive subwoofer output. Frequently asked questionsCan MC331 drive passive speakers directly?Yes. Connect 4–8Ω passive speakers to its speaker terminals.Does it include a phono input?No. A turntable needs a built-in phono stage or a separate phono preamp before the RCA input.Can I connect a TV?Yes, through optical, coaxial or RCA audio output. MC331 does not provide HDMI ARC.Can I use headphones?Yes. It includes a front 3.5mm headphone output.Can I add a subwoofer?Yes. Use pre-out with a powered subwoofer or another compatible downstream device.Are the tubes replaceable?Yes. Officially listed compatible families include 6AK5, 6AK5W, 6Zh1P and 6J1.HOW TO CONNECTPassive speaker systemSource: Phone, computer, TV or line-level sourceConnection: Bluetooth, USB, optical, coaxial or RCAOutput: Speaker terminalsTarget: 4–8Ω passive speakersNote: Select the matching input and begin at low volume.Headphone setupSource: Digital or analog sourceConnection: Bluetooth, USB, optical, coaxial or RCAOutput: 3.5mm headphone outputTarget: Wired headphonesNote: Disconnect or lower speaker output before private listening.2.1 system with powered subwooferSource: Digital or analog sourceConnection: Chosen source inputOutput: Speaker terminals + pre-outTarget: Passive speakers + powered subwooferNote: Use the subwoofer's own level and crossover controls for integration.Technical SpecificationsCore specifications Feature Specification Product type Tube integrated DAC / amplifier / headphone amplifier Maximum speaker output 105W × 2 at 4Ω Speaker impedance 4–8Ω THD ≤0.03% SNR ≥100dB Power supply 24V / 4.5A Inputs and outputs Feature Specification Inputs Bluetooth, USB, optical, coaxial, RCA Outputs Passive speaker terminals, pre-out, 3.5mm headphone output Bluetooth codecs SBC, AAC Replaceable tubes 6AK5, 6AK5W, 6Zh1P, 6J1 Recommended System Setup Setup Connection Desktop speakers PC → USB → MC331 → Passive speakers TV audio TV optical output → MC331 → Passive speakers 2.1 system Source → MC331 → Passive speakers + powered subwoofer Additional Product ContentFosi Audio product comparisonCompare the two compact Fosi Audio integrated amplifiers by the differences that most affect system matching. Feature MC331 MC351 Product position Tube DAC / integrated stereo amplifier High-power 2.1 digital integrated amplifier Built-in speaker amplifier Yes Yes Maximum output 105W × 2 at 4Ω 165W × 2 + 350W at 4Ω Main inputs Bluetooth, USB, optical, coaxial, RCA Bluetooth 5.3, USB, optical, coaxial, RCA Speaker output Stereo passive speakers Stereo passive speakers Passive subwoofer output No Yes, dedicated amplified output Line-level pre-out Yes Yes Headphone output Yes, 3.5mm No Tube stage Yes, replaceable tubes No Best use Compact tube stereo and headphone system Powerful passive-speaker 2.1 system
$129.90 - $143.77
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Fosi Audio Fosi Audio GR40
Fosi Audio GR40 is a desktop tube DAC, headphone amplifier and preamplifier for digital and Bluetooth sources.USB, optical, coaxial and Bluetooth inputs, replaceable 5654W tubes, tone controls and RCA pre-output make it a flexible centerpiece for headphones or powered audio systems.Why it stands outMulti-input desktop DACAccepts USB, optical, coaxial and Bluetooth sources in one compact component.Tube analog stageTwo replaceable 5654W tubes add tube-based amplification and visual character.Headphone and preamp operationUse the front 3.5mm headphone output or feed powered speakers and power amplifiers from RCA.High-resolution and codec supportSupports PCM 32-bit/384kHz, DSD256 and Bluetooth codecs including aptX HD and aptX LL.Best for Desktop headphone listening TVs with optical audio output Computers using USB audio Powered speakers or separate power amplifiers Not ideal for Directly driving passive speakers Balanced headphone or XLR systems Turntables without a phono preamplifier EMiUZEK Buying Notes GR40 is not a speaker power amplifier; passive speakers require a separate power amplifier. The RCA output is muted when headphones are connected. Allow the tubes to cool before removal and only use officially compatible replacements. Frequently asked questionsCan GR40 power passive speakers?No. Connect its RCA output to a separate power amplifier or use powered speakers.Can it connect to a TV?Yes, through a compatible optical or coaxial digital output.Does it include a phono input?No. A turntable requires a built-in or external phono preamplifier.Which headphones are supported?The official range is 32–300Ω through the 3.5mm output.Can the tubes be replaced?Yes, but only with compatible tube types and after the unit is powered off and cool.What Bluetooth codecs are supported?SBC, AAC, aptX, aptX HD and aptX LL are listed in the manual.HOW TO CONNECTComputer headphone systemSource icon: computerSource: Windows PC / MacConnection: USB audioOutput connection: 3.5mm headphone outputTarget icon: headphonesOutput: Wired headphonesTV headphone systemSource icon: tvSource: TVConnection: Optical or coaxial PCMOutput connection: 3.5mm headphone outputTarget icon: headphonesOutput: Wired headphonesPowered speaker or amplifier systemSource icon: streamerSource: Digital source / Bluetooth deviceConnection: USB, optical, coaxial or BluetoothOutput connection: RCA pre-outputTarget icon: speakersOutput: Powered speakers or separate power amplifierTechnical SpecificationsInputs and outputs Feature Specification Inputs USB; optical; coaxial; Bluetooth Outputs RCA pre-output; 3.5mm headphone output Channels 2.0 Tube complement 2 × 5654W Digital and headphone performance Feature Specification Maximum resolution PCM 32-bit / 384kHz; DSD256 Bluetooth 5.1; SBC, AAC, aptX, aptX HD, aptX LL Headphone impedance 32–300Ω Output power 300mW @ 16Ω; 250mW @ 32Ω; 50mW @ 250Ω; 40mW @ 300Ω SNR ≥103dB Power input DC 12V Additional Product ContentComparison: Which Fosi Audio model is right for you? Model GR40 GR70 K7 Product position Tube DAC / headphone amp / preamp Analog tube headphone amp / preamp Balanced digital DAC / headphone amp Digital inputs USB, optical, coaxial, Bluetooth None USB, optical, coaxial, Bluetooth Headphone outputs 3.5mm 3.5mm and 6.35mm 3.5mm and 4.4mm balanced Speaker-system output RCA pre-out RCA pre-out RCA line output Best use Digital sources with tube stage Analog tube headphone system High-output HiFi and gaming
$119.90 - $137.42
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Fosi Audio Fosi Audio Box X5
Fosi 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 - $111.77
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Fosi Audio Fosi Audio V3
This 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 BT30D
Fosi 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 - $98.17
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Fosi Audio Fosi Audio TB10D
Fosi 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 Pro
Fosi 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 - $133.19
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Fosi Audio Fosi Audio MC351
Fosi 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
$117.72 - $169.90
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Arylic Arylic BR10
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 SK01
Fosi 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
$25.42 - $79.00
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Fosi Audio Fosi Audio Q4
Fosi 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
$45.91 - $69.90
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Fosi Audio Fosi Audio MC101
Fosi 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
$58.86 - $99.90
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Arylic Arylic BR10
$49.90 $45.00
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Fosi Audio Fosi Audio SK01
$25.42 - $79.00
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Fosi Audio Fosi Audio Q4
$45.91 - $69.90
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Fosi Audio Fosi Audio MC101
$58.86 - $99.90