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What's Inside?
• 6-Channel amplifier
• (3) 30-amp ATO fuses (installed)
• (4) Mounting feet
• (4) 3/4" Screws
• (8) M2.5x5.5mm Machine screws
• 2mm Allen wrench
• 3mm Allen wrench
• Owner's manual (English/ French/ Spanish)
• Alpine Verification Certificate
• Warranty information
Built to Deliver High-quality Sound
The Alpine R-A90S amplifier is a powerhouse that brings your car audio system to life with its exceptional performance and versatility. Engineered with precision and built to deliver high-quality sound, this 6-channel amplifier is a game-changer for audio enthusiasts seeking optimal power and clarity.
Sleek Design
With its Class-D design and 900-watt maximum power output, the R-A90S ensures clean and efficient amplification, providing ample power to drive your speakers or subwoofers easily. Its compact size makes it easy to install in various locations, while its sleek design adds a touch of sophistication to your car's interior.
Has a Staggered Power Channel Layout
The R-A90S allows you to fine-tune your audio settings to achieve the perfect sound balance, featuring variable high-pass, low-pass, and subsonic filters and adjustable bass boost. It also has a staggered power channel layout, allowing you for a flexible sound system setup.
Features a Remote Bass Knob
Additionally, the R-A90S offers flexible connectivity options, including high-level and low-level inputs, allowing you to connect it to various head units or factory audio systems. It also features a remote bass knob for convenient control over your subwoofer levels on the go.
| Brand | Alpine |
| RMS Power Output (Watts x Channels) | 75 x 4, 250 x 2 |
| Peak Power Output (Watts x Channels) | N/A |
| Power at 2 Ohms (Watts x Channels) | 100 x 4 |
| Bridged Power (Watts x Channels) | 200 x 2 |
| Minimum Impedance Bridged | 4 |
| Minimum Impedance Unbridged | 2 |
| Minimum Impedance | 2 |
| Amplifier Class | D |
| Low-Pass Crossover Frequency | 50-400 Hz |
| Low-Pass Slope (dB/octave) | 12 dB/octave |
| High-Pass Crossover Frequency | 50-6000 Hz |
| High-Pass Slope (dB/octave) | 12 dB/octave |
| Best Frequency Response | 10-45k Hz |
| THD at Rated RMS Power | 0.01 |
| Signal to Noise Ratio | 85 dB |
| Input Voltage | 14.4v |
| Bass Boost | No |
| Bass Boost Frequency | N/A |
| Fan Cooled | No |
| Fuse Rating | 90 |
| Speaker Level Inputs | Yes |
| Preamp Outputs | No |
| Width (inches) | 14 |
| Height (inches) | 2 1/16" |
| Depth (inches) | 10 3/4" |
| Parts Warranty | 1 Year |
| Labor Warranty | 1 Year |
