Product overview
The next generation of Alpine S-Series amplifiers are designed to take your car audio experience to the next level without breaking the bank. With a sleek new redesign and upgraded features from their predecessors, these amplifiers offer exceptional performance and power on an affordable budget .
The S-Series S2-A55V 5-channel amplifier delivers 60 Watts RMS @ 2 Ohms of pristine high-fidelity signal to each of your car's front and rear speakers while powering a subwoofer with up to 300 Watts RMS at the same time. The amp's combination of Hi-Res Audio capabilities in its 4-channel section and extra bass power from the sub channel brings your music to life, with all the precise details, pounding beats, and emotional power clearly revealed. For a 3-channel 2-way system, you could also use the amp to drive a pair of front high-performance speakers with 120 Watts RMS each, while powering a subwoofer with 300 Watts. A variable bass boost on the sub channel allows you to dial in some extra kick and impact to your system's low-frequency sound. You can even add an optional wired remote to control the level of bass from your front seat.
High- and low-pass filters put you in command of the frequency spectrum that reaches your speakers and subs. The amp includes pre-amp- and speaker-level inputs , so you can install it in almost any vehicle, even one with a factory radio. When using the speaker-level inputs, the amp can sense the incoming signal and turn itself on , eliminating the need to run a separate turn-on wire to the receiver or fuse box.
Alpine S-Series amplifiers are available in two mono, a 4-channel and a 5-channel configuration.
Entry-level sound just got elevated with the S2-A55V 5-Channel Amplifier. Its sleek redesign houses an Alpine Class-D amplifier circuit and is now certified for 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.
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.
Key features
- Included terminal covers
- Screw terminals (for speaker and power cables)
- Class-D Amplification (Digital)
- Hi-Res Audio Certified
- Side panel controls
- Thermal Management Control
- Top Mounted LED Power/Status Indicator
- Speaker Level Input
- 3 turn-on modes (DC HI, Remote HI, Remote LO)
- Input Channel Selector Switch for Subwoofer
- Adjustable Gain Control
- Bass EQ
- Remote Bass Control ( RUX-KNOB2 ) Ready (for channel 5 only)
- Bass EQ (50Hz bass boost up to +12dB)
- High Level Input with automatic power on
Technical specifications
| Install | |
|---|---|
| Terminal Layout | Two-sided |
| General | |
| Channel Design | 5/4/3 Channel |
| Crossover | Variable Low-pass Filter (LPF) and High-Pass Filter (HPF), |
| RMS Power Ratings | |
| Per Channel into 2 Ohms, 14.4V (≤1%THD+N) | 4 x 60W + 1 x 300W |
| Per Channel into 4 Ohms, 14.4V (≤1%THD+N) | 4 x 40W + 1 x 200W |
| Bridged, 4 Ohms, 14.4V | 2 x 120W |
| Sound Tuning | |
| Crossover | Variable HPF/LPF: 50-400Hz (-12dB/oct / -24dB/oct for subwoofer) |
| General | |
| Power Requirements | 14.4 V.DC (9 – 16 V allowable) |
| Input Sensitivity (RCA Input) | Hi: 0.5V – 10V / Low: 0.2V – 4.0V |
| Frequency Response | 10Hz – 40kHz |
| THD+N (@ 10W into 4 Ohms) | <0.03% |
| Damping Factor | >100 (speaker channels) / > 750 (subwoofer channel) |
| Weight | 3.2kg |
| Dimensions | |
| Heat Sink (WxHxD) mm | 302 x 57 x 210 |
What you are ordering
The exact Alpine model shown above, SKU S2-A55V. Confirm vehicle compatibility for installation kits, interfaces and vehicle-specific systems before checkout.
Product information verified against the official Alpine product page.