Watch Sean's Video Review of The Alpine S2-A55V

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What's Inside?
• S2-A55V 5-Channel Amplifier
• (2) Connection end covers w/4 attachment screws
• (4) Self-tapping screws
• Hexagon wrench
• “Birth Sheet” that certifies by measurement the actual power of the amplifier in the box
• Alpine Registration Card
• Alpine Limited Warranty Sheet
• Tips sheet for power supply wire connections
• Owner's Manual
Hi-Res Audio
The Next-Gen Alpine S-Series S2-A55V 5-Channel Amplifier is Hi-Res Audio Certified and able to reproduce up to 40kHz frequency response. This ultra-wide bandwidth, coupled with the elevated S-Series design brings out a new benchmark for entry-level performance and price.
Flexible Application
The Next-Gen S-Series Amplifiers now feature a new selectable remote turn-on circuit, a three-position switch that ensures the amplifier turns on and off at the proper times. This design is crucial with newer, in-vehicle technology and allows for proper integration with any factory or aftermarket system.
Easy Control Access
The amplifier was intentionally designed with sound controls located on the side of the panels, instead of the top panel, making it easier to access gain and crossover controls when installed under vehicle seats or in caps were added to cover the side controls and connections, providing a clean, sleek finish to the amplifier.
Power A Full System
With its versatile 5-Channel design, the S-A55V Amplifer is the perfect solution to power your sound system all in a single chassis. This amplifier delivers crisp and clear audio to up to four speakers plus an additional subwoofer to give your system a complete audio upgrade.
| Brand | Alpine |
| RMS Power Output (Watts x Channels) | 40 x 4, 300 x 1 |
| Peak Power Output (Watts x Channels) | N/A |
| Power at 2 Ohms (Watts x Channels) | 60 x 4 |
| Bridged Power (Watts x Channels) | 120 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) | 24 dB/octave |
| High-Pass Crossover Frequency | 50-400 Hz |
| High-Pass Slope (dB/octave) | 12 dB/octave |
| Best Frequency Response | 10Hz-40k Hz |
| THD at Rated RMS Power | 0.01 |
| Signal to Noise Ratio | 83 dB |
| Input Voltage | 14.4v |
| Bass Boost | 0-12 dB |
| Bass Boost Frequency | N/A |
| Fan Cooled | No |
| Fuse Rating | 60 |
| Speaker Level Inputs | Yes |
| Preamp Outputs | No |
| Width (inches) | 11-15/16" |
| Height (inches) | 2 1/4" |
| Depth (inches) | 8 5/16" |
| Parts Warranty | 1 Year |
| Labor Warranty | 1 Year |