max 48v bluetooth stereo power amplifier

Meticulously tuned by Fosi Audio's acoustic engineers, it brings you a neutral and detailed sound that makes your music feel closer—more alive and vivid.

High-Res Bluetooth Audio

BT20A MAX features a Qualcomm QCC3095 chipset with Bluetooth 6.0. Supporting a range of high-quality codecs including aptX, aptX HD, aptX Adaptive, aptX Lossless and LDAC, it ensures a stable, low-latency, and high-resolution listening experience.
The BT20A MAX is Fosi Audio's first stereo amplifier to feature PFFV technology. It minimizes distortion (less than 0.003%) and boosts the SNR (greater than 112 dB) while also enhancing linearity and frequency response to deliver greater sound purity and improve overall system efficiency.

Dual Independent Power Supply

BT20A MAX adopts a dual-rail power architecture with separate LDO 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.

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%.

Impressive Chip Performance

Powered by Texas Instruments TPA3255 amp chip with NE5532 op- amps and finely tuned by Fosi's professional acoustic team, the BT20A MAX delivers detailed and natural sound. Its tonal, musical bass and clean separation offer a living, emotional journey.

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.

Easily Build Your 2.1 System

Designed for refined 2.1 audio systems, it includes a dedicated subwoofer output for seamless bass integration. Equipped with tw RCA inputs and a Bluetooth input, it supports up to three audio sources, while the independent input-selection button allows seamless switching between them.

Versatile Connectivity

Featuring dual RCA inputs, dedicated subwoofer output, and the motorized analog potentiometer allows precise adjustments via the included remote control, perfect for building a 2.1 amplifier home audio system.

All-in-One Audio Control

Enjoy pure sound with Bypass mode, while customizable bass & treble controls in Tone mode. The 12V Trigger input enable synchronized power on/off, and the HPF adjustment for speaker performance.