Model: ATZA 5000 BTE Power Output : 300 W + 300 W Max, 250 W + 250 W RMS at 10% THD, 180 W + 180 W RMS at 5 % THD, 165 W RMS at 2% THD Output Regulation : 2 dB, no load to full load at 1 KHZ Input Channels : Mono 6x Mic 0.6mV/4.7K2,2 x Aux 100 mV/