Number of power amps 7 (Front L/R, Center, Surround L/R, Surround Back L/R or Height) Power output 145 watts per channel (6 ohms, 1 kHz, THD 1%, 1ch driven) 120 watts per channel (6 ohms, 1 kHz, THD 0.7%, 2ch driven) 80 watts per channel (8 ohms, 20 Hz - 20 kHz, THD 0.08%, 2ch driven) Speaker impedance 4 - 16 ohms., Dimensions (W x H x D) 434 x 151 x 339 mm Weight 8.5 kg