The Fosi Audio BT20A MAX is a high-performance Bluetooth 2.1 stereo power amplifier designed for powerful, clean, and versatile home audio systems. Featuring PFFB feedback technology, a dual independent power supply, and premium Japanese ELNA capacitors, it delivers ultra-low distortion ≤0.003% and a high SNR of ≥112 dB for pure and detailed sound. Powered by the TI TPA3255 amplifier chip with NE5532 op-amps, it produces up to 300W x2 peak power to effortlessly drive mainstream speakers. Bluetooth 6.0 with Qualcomm QCC3095 supports Hi-Res codecs including LDAC and aptX Lossless, while RCA inputs, subwoofer output, advanced cooling with a silent fan, remote control, tone adjustment, bypass mode, and 12V trigger make the BT20A MAX a complete and refined 2.1 audio solution.