Alpine R-A75M 750W R-Series Mono Subwoofer Amplifier

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$ 799.00 $699.00

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Alpine R-A75M 750W R-Series Mono Subwoofer Amplifier

  • Variable bass boost (0-12 dB at 50 Hz)
  • Variable subsonic filter (min-40 Hz, 24 dB/octave)
  • Optional RUX-KNOB.2 wired remote level control
  • Preamp and speaker-level inputs

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SKU: RA75M Categories: , ,

Product Description

Alpine R-A75M 750W R-Series Mono Subwoofer Amplifier

Alpine R-A75M new R-Series amplifiers produce accurate imaging and dependable power. Use them with the R-Series speakers and amplifiers for a loud and fun experience.


The Alpine R-A75M R-Series amplifiers utilize Alpine’s advanced amplifier platform that takes the classic Class-D amplifier circuit and adds dual post-filter feedback loops for unmatched accuracy and control. This technology., originally launched in the premium X-Series Alpine R-A75M amplifiers,, produces efficient power with enhanced dynamic range, qualifying the R-Series amplifiers to be Hi-Resolution Audio compliant.


This new technology minimizes audible imperfections like excessive phase shift and internal noise which can deteriorate sound quality. With an incredibly low phase shift of 46°, the R-A60F 4-channel amplifier delivers accurate imaging compared to well over 100° of phase shift by a competitive amplifier model. This superior phase curve ensures a proper sound stage among the singers and instruments.


Alpine R-A75M R-Series amplifiers have a built-in bandpass filter which lets you design an active speaker set-up without a separate processor. Improve the sound quality of component speakers by ditching your passive network.  Avoid added phase shifts and power losses by individually powering each component and assigning your own frequency bands for the incredible sound you’re looking for.


The “R” line of speakers and subwoofers have a heritage of sound quality you can hear from a block away, and the newly added R-Series Alpine R-A75M amplifiers are no exception.  Aside from their best-in-class performance, these amplifiers are tuned to emphasize the characteristics of the R-Series speakers and subwoofers, giving you that legendary R-Series experience .


Alpine’s R-Series Alpine R-A75M amplifier cleanly reproduces the bass in your music so you can enjoy the enhanced realism you want in your vehicle, even when you’re playing high-res music. They’ve applied some hot technology from their top-of-the-line X-Series amplifiers into this R-Series amp. This includes the use of high-efficiency transformers and premium custom capacitors in the amp’s construction. Dual “Sierra” feedback circuitry decreases distortion by correcting the output using the original input signal.


The Alpine R-A75M mono subwoofer amplifier puts out up to 750 watts RMS, conveniently and perfectly matching the power ratings of Alpine’s R-Series subwoofers. Advance Class D amp technology allows this amp to be built so small it’ll fit in almost any of the tiny spaces available in many cars and trucks these days. You can adjust the amp’s low-pass filter, bass boost, and subsonic filter to get just the right bass tone. Plus, you can add the optional RUX-KNOB.2 remote bass knob to control your bass from the dash.

Additional Information


– mono subwoofer amplifier:
500 watts RMS x 1 at 4 ohms (750 watts RMS x 1 at 2 ohms)
– CTA-2006 compliant
– Variable low-pass filter (50-400 Hz, 24 dB/octave)
– Variable bass boost (0-12 dB at 50 Hz)
– Variable subsonic filter (min-40 Hz, 24 dB/octave)
– Optional RUX-KNOB.2 wired remote level control
– Preamp and speaker-level inputs
– Preamp outputs
– Wiring and hardware not included with amplifier
– 4-gauge power and ground leads recommended
– Fuse rating: 40A x 2
– Dimensions: 9″W x 2-1/16″H x 7-1/8″D
– Warranty: 1 year

Mobile Amplifier Channels

1 Channel (Mono)

Mobile Amplifier Class

Class D

Mobile Amplifier Fuse Rating


Mobile Amplifier RMS

351 to 750 watts

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Alpine Canada 1 Year Limited Warranty


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