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Pre-Owned The dB45 is a class AB 4 channel high power amplifier with 3200 watts peak output 1600 watts RMS output and 800 watts CEA-2006 rated power. You should use this rating when comparing with ratings from brands such as Hifonics Earthquake DB Drive etc. This peak power is the amount of power the amp puts out at the loudest moments during a particular song. This amp has a fully adjustable 12dB/Octave crossover with differential circuitry. Other features include a subsonic filter a fully adjustable bass equalizer and mute and delay soft start technology. The dB45 is protected by a full IC controlled circuit and has professional peak limiter circuitry guaranteeing distortion free music playback at all levels. The dB amps by Rockville use the top parts and components recommended by Rockvilles very own engineer. They perform more efficiently resulting in even dB of sound.