Alpine R2-A75M R-Series Mono Power Amplifier

  • $649.00
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The innovative and highly anticipated all-new R-Series amplifiers are truly remarkable powerhouse masterpieces.

With a meticulous approach, every aspect of their design composition and engineering has been embarked upon to achieve sonic excellence and power performance, all-while embodied in a compact form factor. Furthermore, they incorporate advances in technology gained from the ultra-high-end Alpine Status series amplifiers.

A true class-leader, with 750W RMS of onboard power coupled to its all-digital “no shutdown” circuit design, the R2-A75M maintains peak performance at high power output achieving earth-shattering, authoritative bass at virtually any volume.

Be wowed by the bold aesthetic design and stunning build quality—from the moment you see, touch and hold these amplifiers exudes quality. With their solid cast aluminium body, precision machined finishes and high quality terminal blocks, every detail is premium and first-class.

Smaller and more powerful than ever. Alpine’s all-new exclusive digital design architecture has enabled the footprint size to be significantly reduced without compromising on audio specifications and power output. In fact, they are 15% smaller than their predecessors and the completely new R2-A150M is Alpine’s most powerful ever in a highly compact chassis.

Beneath the exquisite beauty cover panel lay the top panel controls providing convenient access to configure the amplifier and fine-tune audio calibration adjustments. What’s more, the single sided terminal layout and integrated chassis mounting makes installation a breeze.

These pint-sized, yet potent amplifiers gives you enormous and effortless power delivery, coupled with incredible audiophile-grade sound quality, making them the perfect choice for the astute system builder enthusiast and discerning music fans.

Born to be played Loud—the all-new R-Series gives you legendary performance with extreme power output matched with unrivalled sound quality and reliability.


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



  • Output Channel: Mono

Power Ratings

  • Power (@14.4V 1% THD)
    • Per Channel into 4 Ohms: 500W X 1
    • Per Channel into 2 Ohms: 750W X 1


  • Ref.: 10W into 4Ω: ≤0.04%
  • Ref.: 10W into 2Ω: ≤0.06%
  • Ref.: Rated Power into 4Ω: ≤1.0%
  • Ref.: Rated Power into 2Ω: ≤1.0%

S/N Ratio

  • IHF A-wtd +AES-17 Ref.: 1W into 4Ω: >75 dB
  • IHF A-wtd +AES-17 Ref.: Rated Power into 4Ω: >102 dB

Frequency Response 

  • (0+/-3dB) Ref.: 1W into 4Ω: 10Hz – 400Hz
  • (0+/-1dB) Ref.: 1W into 4Ω: 15Hz – 325Hz

Damping Factor

  • Ref.: 10W into 4Ω at 100Hz:  >250

Input Sensitivity

  • RCA Input Ref.; Rated Power into 4Ω
    • Hi: 0.4 – 10V
    • Lo: 0.1 – 4.0V


  • Variable LPF
    • 50Hz – 400Hz (-24dB/oct.)
  • Variable Subsonic
    • 8Hz – 40Hz (-24dB/oct.)


  • Bass EQ (fc=50Hz): 0 to +12dB (Variable)

Remote Level*

  • Linear Attenuation : 0 to -20dB

* Requires optional RUX-KNOB.2.

Input Impedance

  • > 10kΩ

Preamp Output

  • > CH-1/2 Input Pass-through, Buffered: 4V max


  • (WxHxD): 282 x 55 x 165mm
  • Weight: 3.5kg