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Alpine R2-A75M R-Series 750W Mono Amplifier

Alpine R2-A75M R-Series 750W Mono Amplifier

Alpine R2-A75M R-Series 750W Mono Amplifier



The Alpine “R-Series” line of speakers, subwoofers and amplifiers have a heritage of sound quality you can hear from a block away, and the newly added R-Series 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. They have a 15% reduced footprint compared to the previous models and are easier to install.

If you like your music loud and clear, our R-Series R2-A75M mono amplifier is for you. It cleanly reproduces the bass in your music so you can enjoy the enhanced realism you want, even when you're playing High-Res music. Alpine has built some of its top-of-the-line amplifier technology into this R2-Series amp, including high-efficiency transformers, premium low-noise custom capacitors, and low-distortion dual "Sierra" feedback/correction circuitry.

The Alpine R2-A75M mono amplifier produces up to 750 watts RMS @ 2 Ohms, making it a perfect match for an Alpine R-Series subwoofer line. Advanced Class-D amp technology makes this powerful amp small enough to fit almost any location. 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-KNOB2 remote bass knob to control your bass from the dash



  • Terminal Layout: One side

  • Small footprint for easy installation

  • Screw terminals (for speaker and power cables)


  • Class-D Amplification (Digital)

  • Channel Design: Mono Channel

  • Top panel controls

  • Thermal Management Control

  • Top Mounted LED Power/Status Indicator

  • Speaker Level Input with remote turn on

  • Crossover: Adjustable Low-pass (LPF) and Variable Subsonic filter

  • Adjustable Gain Control

  • Bass EQ

  • Remote Bass Control (RUX-KNOB2) Ready


Max Power Output Ratings

  • Total Max Power: 1500W

RMS Power Ratings

  • Per Channel into 2 Ohms, 14.4V (≤1%THD+N): 1 x 750W

  • Per Channel into 4 Ohms, 14.4V (≤1%THD+N): 1 x 500W

Sound Tuning

  • Crossover: Variable LPF: 50-400Hz (-24dB/oct)

  • Crossover: Variable Subsonic: 8Hz-40Hz (-24dB/oct)


  • Power Requirements: 14.4 V.DC (9 - 16 V allowable)

  • Input Sensitivity (RCA Input): Hi: 0.5V - 10V / Low: 0.2V - 4.0V

  • High Level Input with automatic power on

  • Cable size: Power Cable AWG 4, SPK Cable AWG 8

  • Frequency Response: 10Hz – 400Hz

  • THD+N (@ 10W into 4 Ohms): <0.04%

  • Damping Factor: >250

  • Weight: 3.5kg


  • Heat Sink (WxHxD) mm: 282 x 55 x 165