Our Best-Sounding Amp Yet
The BT20A MAX is Fosi Audio’s first stereo amplifier to feature PFFB technology. This technology minimizes distortion (≤0.003%) and boosts the SNR (≥112 dB), while also enhancing linearity and frequency response to deliver greater sound purity and improve overall system efficiency. Meticulously tuned by our acoustic engineers, it brings you a neutral and detailed sound that makes your music feel closer - more alive and vivid.
Dual Independent Power Supply
BT20A MAX adopts a dual-rail power architecture with separate supplies for the digital and analog sections. Paired with Japanese ELNA capacitors, it effectively reduces noise interference, delivering cleaner power and a purer sound background. This design further enhances the performance of the PFFB technology, ensuring stable and high-fidelity audio output.
Impressive Chip Performance
Powered by Texas Instruments TPA3255 amp chip with NE5532 op-amps and finely tuned by our professional acoustic team, the BT20A MAX delivers detailed and natural sound. Its tonal, musical bass and clean separation offer a living, emotional journey.
Compact Size, Giant Sound
With peak power reaching 300W per channel, the BT20A MAX delivers excellent control and can effortlessly drive mainstream speakers. It not only faithfully produces the subtle emotions of vocals but also creates a wide, immersive soundstage with ease.
Enhanced Cooling Design
Cooling vents are specially designed on the top and sides of the chassis to ensure proper airflow. Building on the PRO version, the BT20A MAX further refines its circuit design and features a built-in silent fan, improving overall cooling efficiency by 30%.
Hi-Res Bluetooth Codecs
With Bluetooth 6.0, the BT20A MAX supports a wide range of high-quality codecs such as LDAC, aptX and aptX Lossless, delivering a stable, low-latency connection and a high-resolution listening experience across the room.
3 Audio Inputs, 2 Outputs
BT20A MAX features two sets of RCA inputs and Bluetooth connectivity, allowing you to switch instantly between digital and analog sources with a dedicated button.
Dedicated Subwoofer Output, Easily Build Your 2.1 System
What's in the box?
