1. Static power consumption is low, the quiescent current is about 2MA, which is suitable for battery power supply;

2. Working voltage range: 4~12V;

3. very few external components;

4. 200 times the default gain of this board;

5. Low distortion degree;

6. Plate load volume adjustment potentiometer, clockwise increase the volume;

7. Board connector block;

8. With power indicator light.