Rated voltage : 220V-240V 50 / 60Hz Rated power : 1200W Peak : 2000W Rated frequency : 20KH � 20KHz Signal to noise ratio : 90dB Standard impedance : 4 to 16 ohm Type of power amplifier : AV power amplifier Channel : 2.0 channel Total harmonic distortion : ? 0.5% Signal input sensitivity : 200mv (� 30mv) Microphone input sensitivity : 9 mv (� 2mv) Recording level output : 1V Auxiliary level output : 1V Support :USB Disk/Max 64GB SD Card(Not included)