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R-Series 6/5/4/3 Channel Power Amplifier with Staggered Power

Alpine RA90S

Features

  • Hi-Res Audio Compliant
  • Remote Bass-Knob ready with the RUX-KNOB.2 (sold separately)
  • Optimized for Alpine's R-Series Sound System

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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 4 ? . The R-A90S is matched in power and performance for the Dual 10-inch Alpine Halo S-Series Preloaded Subwoofer Enclosures with ProLink ?.

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An Amp the Grows with You

Thanks to the unique staggered power channel layout, the R-A90S can host different levels of power on each channel, compared to traditional, multi-channel amplifiers. This allows the R-A90S to grow with you as it can effectively function as both a 3-way active amplifier and a 5-channel amplifier by delivering the power you need to the channels where you need it the most.

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Accurate Sound Reproduction

Hear the subtle details you ve been missing in your music. The R-A90S maintains an extremely low phase shift throughout the music spectrum, which minimizes audible imperfections in your music and allows your music to stay faithful to the original recording. With a hi-resolution frequency response, the R-A90S can reproduce sound with incredible accuracy that stays true to the artist s intention.

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Alpine Exclusive Technology

Using custom Alpine internal components originally 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 for accurate sound reproduction.

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 4 " . The R-A90S is matched in power and performance for the Dual 10-inch Alpine Halo S-Series Preloaded Subwoofer Enclosures with ProLink ".

An Amp the Grows With You Thanks to the unique staggered power channel layout, the R-A90S can host different levels of power on each channel, compared to traditional, multi-channel amplifiers. This allows the R-A90S to grow with you as it can effectively function as both a 3-way active amplifier and a 5-channel amplifier by delivering the power you need to the channels where you need it the most.

Accurate Sound Reproduction Hear the subtle details you ve been missing in your music. The R-A90S maintains an extremely low phase shift throughout the music spectrum, which minimizes audible imperfections in your music and allows your music to stay faithful to the original recording. With a hi-resolution frequency response, the R-A90S can reproduce sound with incredible accuracy that stays true to the artist s intention.

Alpine Exclusive Technology Using custom Alpine internal components originally 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 for accurate sound reproduction.

Features

  • Hi-Res Audio Compliant
  • Remote Bass-Knob ready with the RUX-KNOB.2 (sold separately)
  • Optimized for Alpine's R-Series Sound System
Dimensions:
Dimensions 12.75" x 10.75" x 2"
Hi-Resolution Audio Compliant (40k Hz)
Alpine s Class D Amplifier Circuit
75W x 4 + 150W x 2 (4 ? , 14.4V, < 1% THD +N)
100W x 4 + 250W x 2 (2 ? , 14.4V, < 1% THD +N)
Bridged 200W x 2 + 500W x 1 (4 ? , 14.4V, < 1% THD +N)
S/N > 85dB (ref. 1W into 4 ? )
THD + N < 0.03% (ref. 10W into 4 ? )
Frequency response 10-45kHz (0/-3dB)
Damping factor > 500
CTA-2006

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.