The BT20A MAX is a compact 2.1-channel Bluetooth stereo amplifier designed for desktop and home audio systems. Powered by the TI TPA3255 Class-D amplifier chip with PFFB technology, it delivers up to 300W × 2 peak power and 180W × 2 RMS output at 4 ohms for clean, dynamic sound performance. It features Bluetooth 6.0 with support for LDAC, aptX HD, aptX Adaptive, and aptX Lossless for high-resolution wireless audio streaming. Dual RCA inputs, passive speaker outputs, and an active subwoofer output with selectable high-pass filter provide flexible connectivity for 2.1 speaker setups. The BT20A MAX also includes bass and treble controls, a remote control, and an upgraded cooling system for stable high-power operation in a compact aluminum chassis. | Fosi Audio | | BT20A MAX Bluetooth Stereo Power Amplifier (2 x 300W at 4 Ohms | Black | Best Buy