Alpine MRV-M500 500W V-Power Series Class D Monoblock Digital Amplifier;

V-Power Series Class D Monoblock Digital Amplifier RMS Power Rating: 4 ohms: 300 watts x 1 chan. 2 ohms: 500 watts x 1 chan. Max power output: 500 watts x 1 chan. Integrated wire and mounting screw terminals S.T.A.R. circuitry LED power (blue) and protect (red) indicators Variable Bass Boost (0 to +12 dB bass boost at 50 Hz) Soft start turn-on 4 or 2 channel operation 4-channel speaker-level inputs Preamp RCA outputs to daisy chain multiple amps 3-way protection circuitry (thermal, overload, and speaker short protection) Dual speaker terminals simplify the hookup of multiple speakers Heavy duty aluminum alloy heat-sink Input sensitivity: 0.4V - 10V Non-fading pre-amp output Variable low-pass filter (50-400 Hz, 24 dB/octave) CEA-2006 compliant amplifier