-APTX2 TPA3223 2.1 Channel Bluetooth Amplifier Board 200W+200W+400W Subwoofer Module B

A high-performance 2.1-channel amp board built around QCC3034+PCM5102+TPA3223+NE5532 (TI) chips, supporting 32bit 384KHZ sampling and Bluetooth -APTX2. Rated outputs: 200W + 200W + 400W. The module runs from 15-40VDC and uses an air-cooled heat dissipation scheme to keep temperatures controlled under load. Five TI NE5532 operational amplifiers are employed to preserve signal fidelity; the DIP8 operational amplifier socket is fully gold-plated for low contact resistance and reliable transmission, and allows easy replacement of the op-amps. A dedicated subwoofer signal output expansion port is provided and the board is compatible with -3002. There is also a karaoke board expansion port and provision to install the -AMP QCC3034 module, with support for transmission encoding formats including AAC, -LL, and -HD. Power-stage components include high-power digital amplifier dedicated inductors designed for high current, low magnetic loss and minimal heat generation. Oxygen free copper wires are used to improve sound quality, and a magnetic shielding mechanism reduces electromagnetic interference.