1. This amplifier board comes with a music rhythm light, supporting 4-level brightness adjustment and two rhythm modes to choose from 2. Supports DC 9-24V voltage input, stereo dual channel output, supports 100W+100W high power 3. With a protection mechanism, it has protection against overvoltage, short circuit, overheating, overcurrent, etc 4. Adopting 5.5/2.1 sockets, compatible with 5.5/2.1 and 5.5/2.5 plugs, equipped with DC adapters, convenient for non-standard plug wiring 5. Using a mobile app for control, downloading the app for easy remote control, BT 5.1 version for longer transmission distance Product Name:BT Audio Amplifier Product model:XY-D100H Power supply:DC 9-24V/5A BT version:5.1 Audio input:BT+AUX+U disk+USB sound card Audio channel:2.0 USB decoding:WAV/FLAC/APE/MP3 Left and right channel output power: 10W+10W @ 8 Ω/12VDC 20W+20W @ 4 Ω/12VDC 35W+35W @ 8 Ω/24VDC 70W+70W @ 4 Ω/24VDC 50W+50W @ 4 Ω/21VDC 100W+100W @ 2 Ω/21VDC Remote control function:Sinilink APP Note:Due to different production batches, there are differences in printing/appearance, which does not affect use. Colour:Black Material:PCB+Components Package Contents: 1 * power amplifier board 1 * DC adapter 1 * screwdriver