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Fosi Audio BT20A MAX is a compact yet powerful 2.1 channel stereo amplifier designed for high-fidelity listening with modern connectivity. Featuring advanced amplifier technology and high output power, it delivers clean, dynamic sound suitable for both home HiFi and versatile audio setups.
Fosi Audio BT20A MAX 2.1 Channel Stereo Amplifier
The Fosi Audio BT20A MAX is engineered to deliver high-purity audio performance in a compact chassis. It is the first stereo amplifier from Fosi Audio to feature PFFB technology, significantly improving linearity and frequency response while minimizing distortion. Carefully tuned by acoustic engineers, the amplifier provides a neutral and detailed sound signature that brings clarity and realism to music playback.
The amplifier adopts a dual-rail power supply design with independent digital and analog sections, complemented by high-quality Japanese ELNA capacitors. This architecture reduces noise interference and ensures a clean background, allowing the amplifier to fully exploit its high signal-to-noise ratio and low distortion characteristics.
Powered by the Texas Instruments TPA3255 chipset, the BT20A MAX delivers up to 300 W per channel at 4 ohms peak power, with 180 W RMS per channel. It can confidently drive speakers with impedances from 2 to 8 ohms, making it suitable for a wide range of bookshelf and floor-standing loudspeakers. The sound presentation features controlled bass, clear separation, and a spacious soundstage.
For wireless listening, the BT20A MAX integrates Bluetooth 6.0 via a Qualcomm QCC3095 SoC, supporting high-resolution codecs such as LDAC and aptX Lossless for stable, low-latency transmission up to 15 meters. Two RCA inputs and Bluetooth connectivity can be switched instantly, while a dedicated subwoofer output enables seamless expansion into a 2.1 audio system. Enhanced ventilation and a built-in silent fan improve thermal performance, ensuring reliable operation during extended listening sessions.
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Speakers
Amplifiers
DAC converters
DSP modules
Turntables
Streamers
Woofers
Tweeters
Exciters
Bass shakers
Plate amplifiers
Amplifier modules
Single board computers
Assembled crossovers
Printed Circuit Boards (PCB)
Capacitors
Resistors
Coils
Circuit Breakers
Crossover tools
Screw terminals
Acoustic measurements
Electric measurements
Sound level meters
DIY amplifier kits
DIY component packs
DIY speaker kit
DIY subwoofer kits
DIY bluetooth speaker
DIY electronics kits
Binding posts
Cabinet Hardware
Cables
Connectors
Speaker cabinets
Electromechanics
Power supplies
Speaker repair
Workshop & tools
Amplifier accessories
Stands & mounts
Gift voucher
Books
New products
