Best Fosi Audio in 2026

❤Tube MM Phono Preamplifier: Converts phono signals to Line Level Signals with low-noise integrated circuits and high-quality components to remove low-frequency noise and ensure clear sound quality. Designed with a grounding post to protect your turntable.

❤Three switchable gain modes: 39, 42, and 45 dB. Adjustable gain levels to give you customizable control and outstanding compatibility. Entry-Level high-end analog sound and top-notch circuitry for an unbeatable low cost.

❤Tube Preamplifier: It's also a tube preamp with 3.5mm AUX Input. Designed and assembled by Fosi Audio from high-quality components. Great warm, smooth-sounding.

Simple compact design but practical and powerful, little Hi-Fi Bluetooth wireless amplifier exclusively designed for the customers who pursue HiFi sound.

Bluetooth 5.0 core, up to 50ft connection range guarantees low signal delay. No pop, no audible noise when Bluetooth connection is established.

BT20A Bluetooth stereo receiver amplifier adopts 2PCS Texas Instruments TPA3116D2 chip. The TPA3116D2 are stereo efficient and digital amplifier power stage for driving speakers, with advanced oscillator/PLL circuit employs a multiple switching frequency option to avoid AM interferences.

Q4 DAC headphone amplifier is designed with RCA/PC-USB/optical/coaxial/ inputs and 3.5MM headphone outputs can fit with most home audio system and headphones. (Note: Q4 do not support Microphone). RCA output can be connected to amplifier or powered speakers on your desktop. Built-in Hi-Fi headphone amp chip can drive most 16 Ohm to 200 Ohm headphones.

Q4 Heaphone USB DAC Adopts the Texas Instruments NE5532 high-performance operational amplifiers chip combining excellent DC and AC characteristics. Q4 features very low noise, high output-drive capability, high unity-gain, and maximum-output-swing bandwidths, low distortion, high slew rate, input-protection diodes, and output short-circuit protection.Q4 has specified maximum limits for equivalent input noise voltage.

160mW RMS(32 ohms, 20 Hz - 20 KHz, 0.01% THD), with bass and treble control Q4 can be used as preamp or volume controller for your PC/Computer/MAC/headphons/speakers system. Easy to set up. No special software, app, or driver to install, a true plug-and-play digital audio adapter.

T20 Bluetooth Tube Power Amplifier/Headphone Amplifier adopts QCC3031chip supporting aptX and aptX HD. aptX HD was designed to answer the growing demand for high-resolution audio. This enhanced codec supports 24-bit music quality over Bluetooth. This means you can hear even the smallest details in their music.

Perfect for 16-64ohm headphones/outdoor/bookshelf/computer/desktop/ceiling/floor standing speakers, compatible with iPod, Phones, MP3 players, TV, Echo Dot, CD players, or Streaming Media players.

T20 Hi-Fi Bluetooth amplifier receiver with 50 watts per channel power output can drive most home passive speakers to create unbelievable sound. Easy to fit your audio system with Bluetooth and RCA input.

2.1CH Bluetooth 5.0 Power Amplifier: Exquisite design, improved operation, great sound performance.

BT30D supporting Bluetooth and RCA input can drive most home passive speakers, passive/powered subwoofer. SUB volume/Frequency, Bass/Treble control ensure Hi-Fi music quality.

BT30D wireless stereo amplifier adopts 2 pcs Texas Instruments TPA3116D2 chip. The TPA3116D2 are stereo efficient and digital amplifier power stage for driving speakers, with advanced oscillator/PLL circuit employs a multiple switching frequency option to avoid AM interferences. High-performance effectively improve output power and audio quality. Max power output up to 200Watt.

TDA7498E 320W power amplifier for home theater speaker systems with aluminum enclosed, small size but powerful, good-looking, simple functionality, and easy to operate, achieving excellent sound quality.

Fosi Audio TDA7498E 2.0CH audio integrated amplifier adopts STMicroelectronics TDA7498E chip. The TDA7498E is a dual BTL class-D audio amplifier with a single power supply designed for home speaker systems applications. Special features: smart protection, thermal overload protection, the small offset of less than 20 mV, standby and mute features, differential inputs minimize common-mode noise.

2x160W ultra power amplifier, fully integrated audio amplifier architecture with RCA input, unparalleled power efficiency, optimized for music playback with very low power losses and cool operation.HD audio quality, best-in-class audio performance - high dynamic range, low distortion, low noise.

TB10A is a highly efficient, fully integrated, digital audio power amplifier based on NEW class D amplifier technology. It supports a 12-24V supply voltage range, allowing it to be used in many different home audio applications.

TB10A 2.0CH home audio amplifier adopts 2 pcs Texas Instruments TPA3116D2 chip. The TPA3116D2 are stereo efficient and digital amplifier power stage for driving speakers, with advanced oscillator/PLL circuit employs a multiple switching frequency option to avoid AM interferences. High-performance effectively improve output power and audio quality.

Ultra-compact and high power output in a small aluminum enclosure. MAX Power Output up to 100W X 2(4 ohms, 20 Hz - 20 kHz, 0.04% THD). TB10A can drive 200watts(8 ohm), 300watts(4 ohm) passive speakers.

2.1CH Bluetooth 5.0 Stereo Amplifier & U-Disk Player. BL20C Class D power amp supporting U-disk/ Bluetooth/ RCA input can drive passive speakers+powered subwoofer. U-Disk input for convenient and portable use support audio format: MP3/WMA/APE/ FLAC/WAV.

BL20C stereo receiver amplifier adopts STMicroelectronics TDA7498E chip. The TDA7498E is a dual BTL class-D audio amplifier with a single power supply designed for home speaker systems applications. Special features: smart protection, thermal overload protection, the small offset of less than 20 mV, standby and mute features, differential inputs minimize common-mode noise.

Advanced Circuit Design Ensure Hi-Fi Sound. The upgraded Bluetooth 5.0 audio technology powers the wireless sound behind many of the world’s finest devices that you love, so you can stream music from your favorite media services without compromising on sound quality, works with the latest devices including iPhone/Android, iPod, iPad, PC, Laptop, Computer TV, DVD, etc.

【4 Channel Stereo Headphone Amplifier】Fosi Audio PH04 is a 4 high-power stereo amplifiers with output level control for each channel, compatible with 3.5MM headphones and 6.35MM headphones(You need a 3.5MM to 6.35MM adapter). If you're tracking more than one musician at once, or if everyone in a group wants to listen to a playback, you need a monitor distribution system. The compact, flexible PH04 can power up to four pairs of headphones and up to four independent volumes.

【Upgraded Version】PH04 is designed with a power switch and 3.5MM headphone output compare with other 4 CH headphone amp. When a recording session calls for everyone's heads and ears to be in the game, the PH04 is the perfect solution and a real money-saver!

【Great Sound, Great Value】The PH04 contains 4 independent stereo high-power amplifier sections that maintain the highest sonic quality even at maximum volume levels. These ultra-low-noise operational amplifiers are included for outstanding audio performance: the same op amps found in "full-size" audio equipment.

Please note that this is a preamplifier and cannot be utilized for turntables or passive speakers. It is not a power amplifier or phono preamp.

This preamplifier features RCA inputs that can be connected to various devices such as computers, phones, iPods, and CD players. Additionally, it includes RCA outputs that can be used with digital amplifiers and active multimedia audio devices for lossless audio (Please note: RCA cables are not included).

This preamplifier boasts a small and compact design and incorporates an optimal integrated circuit to deliver powerful, dynamic, and sweet sound. Furthermore, the tubes in this preamplifier can be replaced with 6K4, 6AK5, EF95, 5654, or 403B tubes.

Fosi Audio V1.0B mini stereo amplifier includes highly efficient, fully integrated, digital, class D audio amplifier ICs based on NEW amplifier technology, supporting a supply voltage range from 12 V to 24 V, allowing it to be used across home and professional audio applications.

V1.0B 2-channel class D amplifier adopts 2PCS Texas Instruments TPA3116D2 chip. The TPA3116D2 are stereo efficient and digital amplifier power stage for driving speakers, with advanced oscillator/PLL circuit employs a multiple switching frequency option to avoid AM interferences. High-performance effectively improve output power and audio quality.

Advanced circuitry design, built-in speakers protection circuit, solid aluminum chassis, the home Hi-Fi integrated amplifier create clear and clarity sound, no audible noise, dead silent when nothing is playing through it.

Fosi Audio BL20A 2.1 channel Bluetooth 5.0 power amplifier can drive most home passive/powered/bookshelf/ceiling speakers. With 3.5MM AUX output, BL20A can connect to passive speakers and powered speakers simultaneously. Or you can connect to an preamp through the 3.5MM output to build a simple sound system.

3 Input Modes: BL20A support Bluetooth, RCA, U-Disks and 3.5MM AUX input with bass, treble, volume and remote control, compatible with most latest device. Utilizes Bluetooth 5.0 technology for seamless device linking and a 50ft connection range. A new generation class D amplifier give you the ultimate Hi-Fi music experience.

BL20A Adopt 2PCS Texas Instruments TPA3116 poewr amplifier chips digital amplifier power stage for driving speakers up to 100W / 2 Ω in mono channel, MAX power output up to 200Watts. The TPA3116 are fully protected against faults with short-circuit protection and thermal protection as well as overvoltage, undervoltage, and DC protection. Faults are reported back to the processor to prevent devices from being damaged during overload conditions PCB to be used across different power levels.

If you want to play your favorite songs entertainingly, a mini stereo amplifier is the best way to go. Fosi Audio TB10D is an analog input(RCA) Class-D audio amplifier that easy to install to build your home audio sound system.

MAX Power Output up to 600Watts. TB10D adopts TI TPA3255 high-performance Class-D power amplifier chip enabling true premium sound quality. TPA3255 features an advanced integrated feedback design and proprietary high-speed gate driver error correction (PurePath Ultra-HD). This technology allows ultra low distortion across the audio band and superior audio quality. The device is operated in AD-mode, and can drive up to 2 x 315 W into 4-Ω load at 10% THD and 2 x 150 W unclipped into 8-Ω load.

The high-efficient 2.0CH 300Wx2 desktop power amplifier can drive almost home large passive bookshelf speakers ensuring top-notch sound quality and is compatible with most sound equipment such as computers, DVDs, CD players, PC, laptops, TV, etc.

Fosi Audio V1.0G mini stereo amplifier includes highly efficient, fully integrated, digital, class D audio amplifier ICs based on NEW amplifier technology, supporting a supply voltage range from 12 V to 24 V, allowing it to be used across home and professional audio applications.

V1.0G 2-channel class D amplifier adopts Texas Instruments TPA3116D2 chip. The TPA3116D2 is a stereo-efficient and digital amplifier power stage for driving speakers, with an advanced oscillator/PLL circuit that employs multiple switching frequency options to avoid AM interferences. High performance effectively improves output power and audio quality.

Advanced circuitry design, built-in speakers protection circuit, solid aluminum chassis, the home Hi-Fi integrated amplifier create clear and clarity sound, no audible noise, dead silent when nothing is playing through it.

2.1 Channel Hifi DAC Amplifier Support 24bit/192Khz Audio with EQ Control. 100Watts Class D power amp(50Watt x2@4ohm) with low-pass power subwoofer output and passive speakers output can drive most home speakers. Easy to build your home theater systems and enjoy Hi-Fi music with DA2120A.

Multiple Input Modes. DA2120A wireless stereo amplifier supporting PC-USB/Optical/Coaxial/3.5MM AUX/Bluetooth 5.0 input can fit with most home Hi-Fi sound systems. Note: Optical interface does not support Dolby/DST audio.

DA2120A adopts the Texas Instruments NE5532 operational amplifier chip. The DA2120A are high-performance operational amplifier combining excellent DC and AC characteristics, featuring very low noise, high output-drive capability, high unity-gain, maximum-output-swing bandwidths, low distortion, high slew rate, input-protection diodes, and output short-circuit protection. NE5532 are compensated internally for unity-gain operation, with specified maximum limits for equivalent input noise voltage.

2.1 CH Wireless DAC Hifi Amplifier with EQ Control. MAX Power Output up to 120Watts x2@4ohm. DA2120C can drive most home bookshelf/desktop/outdoor(passive) speakers and powered subwoofer, offering low distortion and acoustically accurate audio reproduction. The bright digital LED display lets you see the settings you change easily and remote control for hassle-free adjust the inputs mode/volume/bass/treble.

DA2120C high-performance integrated stereo digital amplifier adopts Texas Instruments TAS5352A chip, designed to drive a 4-Ω bridge-tied load (BTL) at up to 125 W per channel with low harmonic distortion, low integrated noise, and low idle current. The TAS5352A has a complete protection system integrated into the chip, safeguarding the device against a wide range of fault conditions that could damage the system.

2-in-1 High-Performance DAC Power Amplifier with Multiple Input Modes. DA2120C installed in a quality aluminum enclosure support Bluetooth/RCA/PC-USB/Coaxial/Optical Input, easy installation to build a stereo sound system.

The BOX X1 phono preamp is an ultra-low noise device that converts phono signals into line-level signals for hassle-free playback. Its design includes a grounding post that effectively protects your turntable, ensuring optimal performance.

This MM phono preamplifier is equipped with a DC12V high-quality power supply, providing reliable and stable performance. It features an output voltage level of 2V max (P-P) at 10K Ohms, with an SNR of 70dB and THD of ≤0.08% @ 1kHz and 3mV, along with a standard RIAA frequency response. Experience exceptional audio quality with this powerful and efficient preamp.

The receiver for the turntable offers versatile connectivity options, including MM turntable input, RCA line output for powered speakers, and a 3.5MM headphone output. Connect a power amplifier using either the 3.5MM AUX or RCA output, and enjoy immersive audio with passive speakers. Additionally, you can enjoy high-quality music using headphones through the 3.5MM headphone output. Note that both the RCA line output and AUX headphone output can be used simultaneously for maximum flexibility.

Operating Frequency: 2400MHz-2500MHz, gain 6dBi and wide operating range.

No Tools Required: Light, compact design that is easily configured and compatible with 2.4GHz systems.

Specifications: SMA-J [MALE PLUG], length:195mm, 90-degree tilt, and 360-degree swivel on antennas.

The upgraded version of Fosi Audio Q4 adds microphone function, K5 Pro headphone DAC amp combo, next-generation audio converter with unrivaled internals, more outstanding performance, and richer audio details. Born for Gaming. K5 Pro stereo DAC headphone amplifier is perfect for your home gaming system, equivalent to an external sound card, suitable for PS5/Computers/PC/MAC/active speakers, etc.

K5 Pro USB DAC converts USB Type C/Optical/Coaxial signals to 3.5MM AUX and RCA signals with low distortion and great dynamic range. Unique design: 2-in-1 USB Type C interface charging port and audio input means K5 Pro is compatible with your phones(Note: Your audio source must be connected to the USB-A/C port.). RCA output can be connected to an amplifier or powered speakers on your desktop. 3.5 MM AUX and microphone interface can drive 16 Ohm to 300 Ohm headphones.

K5 Pro headphone DAC adopts the Texas Instruments NE5532 op-amp chip. The circuit design implementing this DAC has been optimized for a low-noise floor and clean sound. Compared to the last generation Q4, K5 Pro has noticeably improved on overall sound quality, so you can get immersed in your music even more easily.

Next Generation 2.1 Channel WIFI&Wireless Amplifier. Stream Hi-Fi music to your home stereo system via LAN/Bluetooth/3.5MM AUX/U-Disks. The 3.5MM PRE-OUT interface can connect a powered subwoofer, powered speakers, headphones, or power amplifier. Easy to set up a HIFI speakers system with remote control.

T10 with a high-performance audio converter supports Wi-Fi high-quality audio via 192Kbps/24bit, enabling uncompressed digital audio transmission. The built-in TPA3116 Chip is a stereo efficient and digital amplifier power stage for driving speakers, with an advanced oscillator/PLL circuit that employs multiple switching frequency options to avoid AM interferences.

Enjoy ubiquitous Hi-Fi music in your home. After setting up the T10 with your speaker's system, you can use the WiiM app to quickly play your favorite music. And multiple devices can control the T10 at the same time, just confirm the device has connected to the same network and the WiiM APP is installed.

Acoustically Tuned to Perfection - Acoustic engineers with over 20 years of experience help fine-tune the two full-range drivers and diaphragm to deliver more precise sound field dialysis. Whether the treble or the bass, enjoy the expansive audio and crystal-clear sound with this ultra-slim soundbar.

Smarter on the Inside - Tailor your listening experience by switching up the equalizer settings from 5 modes (Bass, Music, Movie, Game, or News) with the handy included remote control, even bass volume is adjustable with it. Small LED lights on the sound bars for tv will light up for visual confirmation.

More Elegant on the Outside - Only 2.46 inches tall, the minimalist shape of the Bluetooth sound bar speaker elevates the elegant design and blends seamlessly into your home, whether you place on furniture or mount it (wall mount brackets included). Suitable for TV under 35 inches.

Advanced 2.1CH Bluetooth 5.0 Receiver Amplifier achieves HiFi music quality, the best choice for your home audio entertainment. You can connect passive speakers/passive subwoofer/powered speakers/powered subwoofer to DIY a stereo sound system.

Fosi Audio BT30D Pro is the upgraded version for BT30D. All-NEW Black Aluminum Appearance. BT30D VS BT30D Pro: MAX Power Output: 50 Watt x2+100 Watt VS 165 Watt x2+350 Watt, Amplifier Chip: TPA3116D2 VS TPA3255. Output: RCA output for powered subwoofers VS 3.5MM full-range output for powered subwoofers and speakers. Just choose one model for your needs.

BT30D Pro Adopts 2PCS Texas Instruments TPA3255 high-performance Class-D power amplifier chip. BT30D Pro can drive up to 2 x 175 W into 4-Ω load and 2 x 220 W into 3-Ω load. In addition to excellent audio performance, TPA3255 achieves both high power efficiency and very low power stage idle losses below 1 W. This is achieved through the use of 60 mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.

The Fosi Audio BOX X3 is a state-of-the-art phono preamp that uses Bluetooth 5.0 JAN 5654W tube technology for superior audio quality. This 2-in-1 preamp serves as both an MM turntable preamplifier and a Bluetooth 5.0 preamp, making it an essential component for the modern audiophile.

The tube phono preamp improves the audio quality of your MM turntable by converting the phono signal to a more manageable line level, resulting in better sound and increased volume levels for your home audio system.

Upgrade your home audio setup with the BOX X3 Bluetooth 5.0 tube preamplifier. With a 3.5mm line input, easily connect your latest devices for wireless Hi-Fi music streaming to powered speakers. Please note that an amplifier is required for passive speakers.

Hi-Fi wireless Class AB tube amplifier offers a warm and natural sound quality and superb audio fidelity.

Tube headphone amplifier can drive 16-300Ohm headphones.

Exclusive design with Bluetooth 5.0/dual RCA input, 2.1 channel(support active subwoofer). RMS power output: 50W x 2

Input Diversity: The USB C DAC DS2 supports 32bit/768kHz and DSD64/128/256/512, with ESS technology ES9018K2M chip onboard. It also features both single-ended (3.5mm) and balanced (4.4mm) outputs, and a USB-C port, boosts your personal listening.

Portable DAC Amp: The headphone amp DS2 is small but compatible with your device (such as a PC/Laptop/Smartphone/Desktop/Players) and powerful enough to give you the sound quality you want. Size: 2.17*0.75*0.47in; Weight: 15g.

Recommended Headphone Impedance: 16-300Ω(SE/BAL). Amplifiers drive your headphones with great power that enables them to double the intensity of sound that is coming from your device.

Upgrade your home audio system with the new-generation phono preamp, the Fosi Audio BOX X2 upgraded version.

JAN 5654W Tube MM Phono Preamplifier: The BOX X4 phono preamp supports 3.5MM AUX and MM turntable input, converting phono signals to Line Level with low-frequency noise removal using high-quality components and low-noise integrated circuits. Protect your turntable with the grounding post feature.

Tube Headphone Amplifier & Preamplifier: The Fosi Audio BOX X4's versatile design includes a 3.5MM AUX headphone and RCA output, offering a range of usability beyond expectations.

TI TPA3255 Chip Amplifier with 300 Watts x 2 Power Output: Advanced feedback design and high-speed gate driver error correction for efficient and high-quality audio performance, with low idle losses of <2.5W.

Upgraded High-Efficiency: A significant upgrade from the BT20A amplifier with replaceable Op-Amps for customized. You can replace the two plug-in NE5532 Op-Amps with LME49720HA/MUSES02/OPA2604AP/OPA2134PA/LM4562/NJM4556AD Op-Amps to achieve a unique sound quality. With SNR≥108dB and THD≤0.005%.

Enhanced Bluetooth 5.0 Connectivity: The Bluetooth pair can be cleared by pressing and holding the volume control for five seconds. In addition, it has a memory Function for Easy Pairing and Alert Tone.

The Fosi Audio M04 is a mono amplifier designed for driving passive subwoofers or speakers. It features the Texas Instruments TPA3116 chip and NE5532 op-amp, providing an output power of 100 watts for a 4-ohm subwoofer or speaker.

The M04 SUB amp is designed to improve the bass response of passive subwoofers. It features a selector switch that allows the user to switch between subwoofer bass amplifier and full-frequency mono amplifier modes.

The mono amplifier home audio has a small and robust design with a built-in low pass filter for subwoofers and a sub frequency control, making it practical and powerful. It uses highly efficient Class D technology that remains cool under demanding loads and doesn't take up much space.

Subwoofer Amplifier and Full-Frequency Mono Amp：Switch to PBTL, M03 is a Full-Frequency Mono amp for driving passive speakers and powered subwoofer. Switch to SUB, M03 is a subwoofer amplifier for diving passive and powered subwoofers.

M03 adopts the Texas Instruments TPA3255D2 chip that features an advanced integrated feedback design and proprietary high-speed gate driver error correction (PurePath Ultra-HD). This technology allows ultra low distortion across the audio band and superior audio quality.

High Efficient Power Output up to 200Watt. M03 can provide 150 watts RMS into 4-ohm loads or 120watts to 8-ohm loads. (Note: Package comes with 32V/5A power supply, you need a more powerful power supply to get the MAX power output.

TP-02 Class D digital subwoofer amplifier is a compact amp designed to power passive and subwoofers used in home theaters or whole-house audio systems.

Redefine the Bass: TP-02 high-efficiency subwoofer amplifier serves up big bass with up to 220W peak for deep, crisp, clean low frequency sound effects.

TP-02 subwoofer amplifier for home theater adopts STMicroelectronics TDA7498E chip. The TDA7498E is a dual BTL class-D audio amplifier chip with a single power supply designed for home speaker systems applications. Special features: smart protection, thermal overload protection, the small offset of less than 20 mV, standby and mute features, differential inputs minimize common-mode noise.