AUX input 2 road, road 3 MIC input, 1 road AUX output; MIC1 priority function; Constant voltage 70 v to 100 v output and 4 ~ 16 European resistance output; Each input channel independent volume control, high and low sounds music control; Smart short-circuit overheating protection (1.5 U / 2 U chassis) technical parameters are as follows:

4-16 Ω output way: constant resistance, constant voltage 70 v, 100 v;