TPA3116D2 Bluetooth 5.0 2.1 Channel Power Audio Stereo Subwoofer Amplifier Board 50WX2+100W TREBLE Bass note tuning AMP S100H

There are two versions of this product. The main difference lies in the difference of the amplifier chip used, the difference of the output filter or not, the difference of the size. he A100H has no USB player function and only AUX+ Bluetooth input for more stable sound quality Audio input: support bluetooth, AUX analog signal Recommended power voltage: DC19V Recommended power voltage: DC19V.syi