The Bluetooth-compatible audio power amplifier module has 2.1 channels and the maximum output power is 2X50W+100W. It has two audio input modes, AUX and Bluetooth-compatible, and a two-in-one power amplifier board. Bluetooth-compatible5.0, higher transmission efficiency, transmission distance It has short-circuit protection, over-current, over-heating, and anti-reverse protection to prevent failure. When an overload occurs, the device reports the fault condition to the processor to itself from damage It adopts copper DC connectors and terminals. It can withstand high current without heating or damaging wires. Classic appearance multi-function main knob. The main knob adopts a encoder that is only used in high-end power amplifiers, which realizes 360-degree stepless tuning and a one-key and stop. The operation is simple and convenient by long pressing the switch. With bass, treble, subwoofer frequency and volume control, you can adjust the volume and enjoy the music tone you . It is widely used in shopping malls, home theaters, speakers, etc. Color: black Material: PCB+ metal Package Contents: 1 amplifier board 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.