Model No: 5.1 AV-999 Frequency response: 20Hz-20KHz(±2dB) Music power: 1500W Total harmonic distortion: ≤2% Main channel (RMS4-8):150W+150W Signal-to-noise ratio:≥80dB Heavy bass (RMS4-8Ω):150W Channel separation:≥60dB Left and right surround (RMS4-8Ω):80W+80W Rated voltage: AC220V+10% Center channel (RMS.4-8Q): 100W Input sensitivity:<500mV+10mv Rated load impedance main channel): 4-16ohm Rated frequency:50Hz