One Amplifier with All the Power You Need
The R-A90S is matched in power and performance for the Dual 10-inch Alpine Halo S-Series Preloaded Subwoofer Enclosures with ProLink. When used in 5-Channel mode, the R-A90S can effectively power both your speakers and subwoofers, thanks to the unique staggered power channel layout.
Next-Level System Builds
For the best possible sound experience, use the built-in bandpass, high pass, or low pass filter to individually power each component in your sound system and assign frequency bands for accurate and reliable sound reproduction.
Proper Sound Stage
The R-A90S maintains an extremely low phase shift throughout the music spectrum which minimizing audible imperfections in your music and allows your music to stay faithful to the original recording. The result is hair-raising detail that puts you in the center of the performance.
Accurate Sound Reproduction
Using the same exclusive technology launched in Alpine’s premium X-Series Amplifiers, the R-A90S has dual “Sierra” post-filter feedback loops that correct signal distortion by making the output as close as possible to the original input. The result is music that stays true to the artist’s intention.
Remote Bass Knob-Ready
The R-A90S has input capability to add an optional RUX-KNOB.2 Remote Bass Control Knob (sold separately). The remote bass knob controls the bass in your subwoofer by adjusting the gain on your amplifier for quick bass adjustments when needed.
Optimized for Alpine’s R-Series Sound System
Alpine’s R-Series line of speakers, subwoofers, and amplifiers have a heritage of sound quality that can be heard from a block away. The R-A90S is tuned to emphasize the characteristics of the R-Series speakers and subwoofers for a legendary R-Series experience.