4-Channel Amplifier

This product has been discontinued.

Alpine R-A60F
Alpine R-A60F Alpine R-A60F Alpine R-A60F


The 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.

  • 6-Channel
  • Alpine’s Class D Amplifier Circuit
  • Dual Post-Filter Feedback Loops
  • 100W RMS x 4 (4ohm, 14.4V ≤ 1% THD+N)

6-Channel Amp with 5-Channel Power

The R-A90S has a unique staggered power channel layout that has double the power on the last two channels. When looking to power a dual subwoofer configuration, the R-A90S’s 5th and 6th channels can be bridged to provide up to 500-watts at 4Ω. The R-A90S is matched in power and performance for the Dual 10-inch Alpine Halo S-Series Preloaded Subwoofer Enclosures with ProLink™.

Hi-Resolution Audio Compliant

The 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 R-Series amplifiers to be Hi-Resolution Audio compliant.

Proper Sound Stage

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.

Tuned for the Music You Like

The R-Series amplifiers are tuned for a proper sound stage to make your music sound even better, no matter the genre you prefer. Like hip hop? These amplifiers deliver punchy notes with low extension. Prefer rock? The R-Series amplifiers will make you feel the power and energy of percussion, highs, and lows.

Next-Level System Builds

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 Loudest Family on the Block

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 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 .


Frequency Response
10Hz - 45kHz (+/- 3dB)
Power Range
100W RMS x 4 (4ohm, 14.4V ≤ 1% THD+N)
150W RMS x 4 (2ohm, 14.4V≤ 1% THD+N)
Bridged: 300W x 2 (4ohm, 14.4V, ≤1% THD+N)
> 85dB (ref. 1W into 4Ω)
106dB (at Rated Power)
< 0.03% (ref. 1W into 4Ω)
Damping Factor
> 500
More Information
Brand Alpine
Amplifier Class Class D
RMS Power 100W RMS