Continuous output power 50W (17dBW) Rated distortion (THD 20Hz-20kHz) 0.03% Clipping power 68W (18dBW) IHF dynamic headroom at 8 ohm +3.4dB IHF dynamic power at 8 ohm 110W (20.41dBW) IHF dynamic power at 4 ohm 160W (22.04dBW) IHF dynamic power at 2 ohm 210W (23.2dBW) Damping factor (ref. 8 ohm, 50Hz) >60 Input impedance 20kohm/ 470pF Input sensitivity (for rated power into 8 ohm) 630mA Voltage gain 29dB Frequency response; 20Hz-20kHz +/-0.3dB -3dB at: 3Hz/70kHz Signal/noise ratio; ref 1W 100dB Signal/noise ratio; ref rated power 117dB Physical Specifications Dimensions (W x H x D) 171/8 x 315/16 x 117/16" (435 x 100 x 290mm) Net weight 14.33 lbs (6.5kg) Shipping weight 16.98 lbs (7.7kg)