Alpine R-A75M R-Series Mono Digital Amplifier

Alpine R-A75M R-Series Mono Amplifier - All-new design for sonic excellence.

  • 500 watts RMS x 1 at 4 ohms (750 watts RMS x 1 at 2 ohms)
  • Bass Knob Control Ready 
  • Hi-Res Audio Ready 
  • Sierra-Lo Digital Design 
  • Thick Heat Sink 
  • Sub Heat Sink

Sound Garage - for all your Alpine R-Series Solutions




Alpine R-A75M

R-Series Mono Digital Amplifier

The new Alpine R-Series amplifiers produce accurate imaging and dependable power.

Use the new Alpine R-Series amplifiers with the Alpine R-Series speakers for a loud and fun experience!

Beyond their stunning and bold design, the new Alpine R-Series Hi-Res AUDIO certified amplifiers redefines the industry benchmark in sound performance delivering true high-resolution sound reproduction. Moreover, their all-new digital design provides huge amounts of power output and an extraordinary dampening factor makes these amplifiers class-leading in every way.

Next Level High-Resolution Sound System

Elevating sound to the next level when the R-A75M is partnered with R-A60F Hi-Res Audio certified 4-Channel Amplifier, as well as the R-Series Hi-Res Audio certified range of high-end speakers creates the ultimate high-resolution sound system. R-Series lets you experience true high-definition sound with remarkable accuracy and an extended dynamic range.

Alpine R-A75M

All-new Advanced Digital Design

The all-new R-Series utilise Alpine’s advanced digital design which unlike a typical Class-D amplifier circuit adds all-digital dual post-filter feedback loop for unmatched accuracy and control, while minimising internal noise.

Alpine R-A75M

Extraordinary Damping Factor

The R-Series amplifiers produce an extraordinary damping factor well beyond their rivals; 500> for the R-A60F and >1800 for the R-A75M. This achieves precision control of cone movement at high power outputs with minimal distortion.

Alpine R-A75M

Low-Pass Filter & Bass EQ

You can fine-tune your subwoofer cut-off frequency with the integrated LPF and give additional Bass boost of up to 12dB with the built-in Bass EQ.

RCA and Speaker Level Inputs & Heavy Duty Gauge Terminals

The R-Series amplifiers are equipped with low-level RCA inputs, which can also accept high-level speaker signal inputs. This allows for installation of the R-Series amplifiers into virtually any aftermarket or OEM factory audio system. The speaker and power cable terminals are conveniently located on the R-Series amplifiers providing easy and clean installation. The compact and robust design delivers lossless connectivity.

Alpine RUX-KNOB.2

Control Your Subwoofer

The optional RUX-KNOB.2 remote bass knob controller plugs right in to the R-Series amplifiers, providing quick direct subwoofer control to make bass adjustments on the fly enhancing your listening experience.

Best performance with System Matching 

The R-A75M is designed to perfectly match the Alpine R-Series R-W12D2 and R-W10D2 subwoofers for perfect system building.

The Alpine R-Series Amplifiers have a diagnostic LED located behind the blue Alpine Jewell on the top of the amplifier. A Blue light means the amplifier is operating normally. A red blinking light means the amplifier is currently too hot for operation and needs to cool down. A solid red light can mean three things; 1. Amplifier circuit is abnormal. 2. Temperature is too high. 3. Power supply voltage is too high.

The Alpine 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 amplifiers, produces efficient power with enhanced dynamic range, qualifying the Alpine R-Series amplifiers to be Hi-Resolution Audio compliant.

In the box:

  • Alpine R-A75M Mono Amplifier
  • 4 x M4x20 Self Tapping Screws
  • 8 x Mounting Bracket Screws
  • 4 x Mounting Brackets
  • 1 x Hexagon Wrench

Sound Garage, your Authorised Alpine Car Stereo and Navigation Specialist in Brisbane's Northern Suburbs.

  • All-new Advanced Digital Design
  • Compact Chassis
  • Easy Access Controls
  • RCA and Speaker Level Inputs
  • Bandpass Filter
  • Superior Sound Stage
  • Bridgeable
  • Bass EQ
  • Variable High Pass/Low Pass Filters
  • Subsonic Filter
  • Thermal Protection
  • Rotatable Alpine Badge
  • Remote Bass Knob Ready (RUX-KNOB.2)


  • Output Channels: Mono

RMS Power Ratings

  • Power (@14.4V 1% THD)
    • Per Channel into 4 Ohms: 500 watts RMS x 1
    • Per Channel into 2 Ohms: 750 watts RMS x 1
  • Max Power Output: 1500W

Damping Factor

  • Damping Factor: >1800


  • Heat Sink (WxHxD): 273 x 50.8 x 200mm
  • With attached brackets: 273 x 50.8 x 223mm


There are no reviews yet.

Be the first to review “Alpine R-A75M R-Series Mono Digital Amplifier”

Your email address will not be published. Required fields are marked *

related products that fit your ride
Alpine iLX-F511A Halo11 11-inch Wireless Apple CarPlay/Android Auto/DAB+ Receiver
Alpine Status HDA-F60 Hi-Res Audio 4 Channel Amplifier