Function characteristics:

Microphone input 1, 2 road, 2 road AUX input; 1 road AUX output; 100 v, 70 v output and constant pressure output 4 ~ 16 ohms.

2, a USB port, U disk MP3,

3, a silent sound function, easy to insert the emergency broadcast.

4, the channel volume control independently; High and low tone control.

5, output short circuit, over current protection, overload protection