XH-A157 dual-channel digital amplifier board with DC5V input voltage. Adopt 3.5mmaux audio input, 50K volume adjustment on board. Input, onboard 50K volume adjustment relay, which can be used as power amplifier on and off, and also can freely adjust the volume. This power amplifier also has dual channel audio output with 2*3W power. It has the characteristics of small size, high efficiency, high power and low heat generation.<br><br>Product name: Dual-channel digital amplifier board Product Model: XH-A157 Input voltage: DC5V Audio input: 3.5mm AUX audio cable Number of channels: dual-channel Output power: 2 * 3W Colour:green Material:PCB Size:41 x 37 x 13mm<br><br>Package Contents: 1 x Amplifier Board<br><br>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.