• Sound Input 755mV/47Kohm 1V/47K AUTO • Microphone Input 5mV/600ohm • Master channel separation >45dB O Frequency Response master channelf=20HZ-20KHZ <2dB o Speaker system master channel 4ohm • Signal to Noise Master Channel >71dB • Input Power AC220V-240V/50-60HZ • OUTPUT Watts (1KH2/4ohm/RMS/300Watts x 2)