1. Adopting TPA3255 chip, audio power core, high efficiency, low power consumption, high-definition sound quality, and comprehensive protection mechanism. 2. With protection function, reverse power protection is . 3. Easy to use, tuning of high and low frequencies, more convenient to use. 4. Low loss, using digital amplifier specific inductors for lower losses. 5. Multiple decoding options, supporting Bluetooth audio decoding and USB flash drive decoding. Product Name: Bluetooth Audio Amplifier Power supply: DC19-51V/10A or above DC socket interface: 5.5-2.5mm Bluetooth version: 5.2 Audio input: Bluetooth+AUX+USB flash drive+USB sound card Bluetooth audio decoding: AAC USB decoding: WAV, FLAC, APE, MP3 Left and right channel output power: 30W+30W 8/24VDC 70W+70W 4/24VDC 80W+80W 8/36VDC 160W+ 160W 4 /36VDC 160W+ 160W 8 /50VDC 300W+ 300W 4 /50VDC Subwoofer output power: 30W 8/24VDC 70W 4/24VDC 150W 2 /24VDC 80W 8/36VDC 160W 4 /36VDC 350W 2/36VDC 160W 8 /50VDC 300W 4 /50VDC 600W 2/50VDC Color: As Shown Material: Electronic Component Package Contents: 1 x digital amplifier board 1 x screwdriver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.