We are manufacturer, professional digital amplifier 1,150W*2 2,20HZ-20KHZ 3,60db 4,As usual KTV rooms,Dj bars, meeting rooms We are manufacturer, professional audio amplifier1, 150W*22,20HZ-20KHZ3, 60db4, As usual KTV rooms. Dj bars, meeting rooms. etc. ModelRated powerOutput modelInput sensitivityS/n ratioFred responsePowerDimensionsAK-220150W*270-100V4-16ohm180Mv>60dB AC220V+_10%/50Hz