Alpine MRX-M55 mono amp

1100w X-Power Mono Amplifier

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The new range of Class D car amplifiers from Alpine Car Audio take up a much smaller foot print than previous amplifier making them so much easier to install in tighter cabin and boot wells.

With speaker level inputs as standard these amplifiers allow you to continue to use your factory radio if need be without the need for expensive modifications or additional wiring looms.  With smart remote sensing built into Alpine amplifiers they are compatible with newer European cars running CANBUS technology, this also means you spend less on expensive CANBUS and conversion looms when compared to other amplifier that do not feature this technology.

The Alpine MRX-M55 car amplifier features the latest thermal protection which provides for over voltage and over current detection allowing your amplifier to run longer under heavy loads without damage.


1 Channel Amplifier – Mono Block
550 watts RMS
1100 watt total output
Bass EQ
Speaker Level Input
Remote Sensing Turn On
Low Pass Filter


CEA-2006 Power Ratings

CEA-2006 Power Rating: 350W RMS x 1 (4-ohm, 14.4V at <1% THD+N) Max Power Output Ratings Max Power: 1100W RMS Power Ratings Per channel into 4 Ohms: 350W RMS x 1 (14.4V at <1% THD+N) Per channel into 2 Ohms: 550W RMS x 1 (14.4V at <1% THD+N) Per channel into 1 Ohm: 400W RMS x 1 (14.4V at <1% THD+N) Sound Tuning Crossover Frequency (LPF): 50 - 400 Hz, -24dB/oct. Subsonic Filter: 5 - 30 Hz, -24dB/oct. EQ (Equalizer): 0 to +12dB, fc=50Hz Dimensions Foot Print (WxHxD) mm: 250 x 58 x 230 mm Heat Sink (WxHxD) mm: 190 x 58 x 230 mm General Power Requirements: 14.4 V.DC (11-16V allowable) Input Sensitivity (RCA Input): 0.1 - 4.0 V Input Sensitivity (Speaker Level Input): 0.5 - 10 V Input Impedance: >10k ohms
Frequency Response (+0, -3dB: 1W into 4 Ohms) for Subwoofer: 5 -400 Hz
Frequency Response (+0, -1dB: 1W into 4 Ohms) for Subwoofer: 10 -300 Hz
THD+N (10W into 4 Ohms) for Subwoofer: <0.004 % THD+N (300W into 4 Ohms) for Subwoofer: <0.04 % Damping Factor for Subwoofer: >1000
Signal to Noise (Rated Power into 4 Ohms) for Subwoofer: 114 dB
Preamp Output: 4.0V Max.
Remote Level: -20 to 0 dB
Weight: 2.6 kg


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