Sony 5.1ch home theater system BDV-N1WL Practical maximum total output value (non-simultaneous drive, JEITA) 800W Front 155W + 155W Center 155W Surround 90W + 90W Subwoofer 155W power AC100V, 50 / 60Hz / power consumption (standby) body amplifier body: about 75W (about 0.3W or less) / Surround amplifier: about 50W (about 0.5W or less) Japanese manual URL (PDF):http://www.sony.jp/ServiceArea/impdf/pdf/44563340M-JP.pdf