Output Power: 240W Amplifier 150W @ 8 Ohms 240W @ 4 Ohms Input Section: Maximum Input Level 0.6V Rms With -10dB pad 1.6V Rms Input Impedance 1M Ohm Send output impedance 220 Ohm Return input impedance 50k Ohm Tuner Output Impedance 10k Ohm Direct Output Impedance 500 Ohms Equalizer: Bass +10db @ 60Hz Lo-Mid +6db/-10dB @ 250Hz Hi-Mid +6db/-10dB @ 1kHz Treble +14db @ 7kHz Voicing Filters: String Bass Button +11db@20Hz Contour +2db@50Hz / -10db@500Hz / +3db@7kHz Presence +9db@10kHz Noise -90db referenced to 240W, “A” weighted Cooling Continuously Variable-Speed fan Amplifier Protection: Full short circuit, thermal,& RF protection. Stable into reactive and mismatched loads. Five second muted warm-up.   Dimensions(HxWxD): 3 1/2” x 17” x 8 ¼” (2 Rack Spaces) Weight: 15lbs Power Requirements: U.S.A./Canada 120V/60Hz-410W (at full power) Europe 230V/50Hz-410W (at full power) Japan 100V/50Hz-410W (at full power)