Alpine MRX-M55 550W RMS Monoblock Class D Amplifier

Features:

MRX Series Monoblock Car Amplifier
RMS Power Rating(14.4V):
4 ohms: 350 watts x 1 chan.
2 ohms: 550 watts x 1 chan.
MOSFET power supply
High efficiency digital circuit design
Remote bass level input (Alpine RUX-KNOB remote level control sold separately)
Variable Bass Boost (0 to +12 dB bass boost at 50 Hz)
Mono Channel operation
Speaker-level (high-level) inputs with signal sensing for automatic turn-on
Preamp RCA outputs to daisy chain multiple amps
2-Way System Protection circuitry
Heavy duty heatsink for extreme heat dissipation
Nickel-plated RCA level inputs
Nickel-plated screw terminals
Input sensitivity:
Low level: 0.2V-4V
High level: 0.5V-10V
Variable low-pass filter (50-400 Hz, 12 dB/octave)
Subsonic filter (5-30 Hz, 24dB/octave)
Damping factor: >1000
CEA-2006 compliant amplifier
Frequency response: 5-400 Hz
Dimensions: 9"L x 9-7/8"W x 2-1/4"H