四分区定压功放机，输出功率: 150W，250W
固定阻抗: 4-16欧姆，固定电压：70V，110V
尺寸：485X380X90
Two microphones inputs, three AUX inputs and one AUX out for line
Transformet isolated 100V, 70V, and 4-16Ωoutputs
Muting function
Individual volume control and master volume control
Low and high tone control
Mic with echo function
Inside with chime
Inside with siren
Inside with MP3 player , can connect U dish $ SD card
Power supply: AC100-120V/200-240V 50/60HX
PA-3G:150W  PA-4G: 250W(4-16Ω)