Frequency response: 20Hz – 20kHz (+/- 0.5dB) Output power 8 Ohm: 2 x 50 Watts RMS Output power 4 Ohm: 2 x 80 Watt RMS Input sensitivity: 420mV T.H.D.r: 90dB Input impedance: 47 kOhm Inputs: 4 x Stereo RCA, 1 x Optical, 1 x Coax Outputs: 1 x Stereo Rec Out, 1 x Stereo Pre Out, 2 x 3.5mm Jack (Power control), 4 x Speaker connectors Dimensions (WxHxD): 430x118x375mm Weight: 10kg Color: Black or silver Tubes: 1 x 12AX7, 2 x 6N1