Max. total power: 600 watts (1- channel mode) RMS power 4 ohms: 4 x 55 / 2 x 165 watts RMS power 2 ohms: 2 x 80 watts Max. power 4 ohms: 2 x 110 / 1 x 300 watts Number of channels: 4/3/2 Frequency range: 10-30,000 Hz Stability: 2 ohms. 4 ohms Signal/noise ratio: > 85 dBA Dimensions W x H x D (mm): 184 x 52.5 x 295 mm