Alpine S2-A120M
S-Series 1200W Mono Amplifier
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The Alpine S2-A120M is a high-performance mono amplifier designed to deliver powerful and clean bass output. With a compact design and Class D efficiency, it provides 1200 watts of RMS power at both 1Ω and 2Ω, ensuring optimal performance for demanding subwoofer setups. The amplifier features side-mounted controls for easy access, a selectable remote turn-on circuit for seamless integration with factory or aftermarket systems, and compatibility with optional remote bass level controllers. Its robust construction and advanced features make it an excellent choice for enhancing your vehicle's audio system.
| Key Features | |
|---|---|
| Amplifier Type | Mono Class D |
| Remote Turn-On Circuit | Selectable 3-Position Switch |
| Side-Mounted Controls | Gain and Crossover Adjustments |
| Optional Remote Bass Control | Compatible with RUX-KNOB.2 or RUX-H01 (sold separately) |
| Preamp Outputs | Yes, for Daisy-Chaining Additional Amplifiers |
| What’s in the Box |
|---|
| 1 × Mono Subwoofer Amplifier |
| 2 × Connection End Covers |
| 1 × Mounting Hardware |
| 1 × 2.5mm Allen Wrench |
| 1 × Owner’s Manual |
| 1 × Alpine Verification Certificate |
| Technical Specifications | |
|---|---|
| RMS Power @ 4Ω | 600W x 1 |
| RMS Power @ 2Ω | 1200W x 1 |
| RMS Power @ 1Ω | 1200W x 1 |
| Frequency Response | 20Hz – 400Hz |
| Signal-to-Noise Ratio | >85dB |
| Damping Factor | >750 |
| Low-Pass Filter | 50Hz – 400Hz (24 dB/octave) |
| Bass Boost | 0 – 12dB @ 50Hz |
| Input Sensitivity (Low-Level) | 0.2V – 4.0V |
| Input Sensitivity (High-Level) | 0.5V – 10.0V |
| Dimensions (W × H × D) | 13.1" × 2.25" × 8.25" |
| Fuse Rating | 25A × 4 (100A Total) |
| Warranty | 1 Year |
What Others Are Saying
Eddie was great - SDCS installed a new head unit in my 2019 4Runner. He was honest in his opinions regarding the options I was considering. Pricing was also good - he was able to reuse some of my existing installation kit so I saved a bit of $$.Installation was clean and fast and he took the time to walk through the features before I left. Highly recommend!!
I had a great time at this shop! The staff really knows their stuff and took the time to explain the different options without pressure. Installation was quick, clean and professional. Everything looks factory and sounds amazing. The prices were fair and customer service was above and beyond. I highly recommend this place if you're looking for quality car audio and excellent service.
Those guys are really professional! I had a new Alpine floating head unit installed in my 2008 Mercedes, and it feels like a brand-new car. The installation was super clean. At first, the sound wasn’t the same as the factory stereo, but Kevin tuned it to be just as good—if not better—without adding any new amps. They even used my factory GPS antenna so I don’t have extra wires hanging out. On top of that, they matched the online price. Big thanks to Kevin and Eddie—highly recommended!
Kevin was awesome, he took his time and explained everything to me. I went in initially for a dash cam install and then decided to get a sub and amp installed as well. Both turned out great and will be returning if I need more work done.
Came In not knowing what to expect when suddenly my stereo stopped working. Spoke with Kevin in the front and after a VERY fast diagnosing they discovered my wiring was incorrect. After only about 45 minutes total being in the store I was on my way to the beach with a working stereo again! Thank you so much SDCARSTEREO
Highly recommend Kevin and the team at San Diego Car Stereo for any issues with aftermarket stereos. I bought a car with an aftermarket stereo and AC unit that wasn’t working properly—specifically, the heat wasn’t functioning due to an improper setup. I had several people look at it with no luck, and even the dealership basically refused to help because it was an aftermarket install. I came to Kevin and his team over the holidays feeling pretty defeated, but he was confident he could get the heat working before I headed back to a Colorado winter. Sure enough, he got it done.
FAQ
Do products purchased from San Diego Car Stereo come with a warranty?
Yes, all products come with a 1-year manufacturer warranty unless otherwise stated. This covers any defects excluding physical damage.
Are these products brand new?
Yes, every product we sell is 100% brand new, unused, and comes in original manufacturer packaging unless clearly marked otherwise.
Do you offer installation services?
Yes, we offer professional installation services at both of our San Diego Car Stereo locations. Our expert technicians have over 50 years of combined experience to install all of your car, marine, or offroad audio needs. Stop by or give us a call to schedule an appointment to get a quote in person.