4 channel High-End Amplifier 4 x 150 Watts at 4 Ohms 4 x 240 Watts at 2 Ohms 2 x 480 Watts at 4 Ohms bridged Frequency response 10Hz – 80kHzTHD+N 0.009 % Signal to noise ratio 120 dB Damping factor 1000 Dimensions: 53 x 237.5 x 433 mm.