--- product_id: 637699334 title: "Alpine S2-A120M S-Series Class-D Mono Subwoofer Amplifier, Hi-Res Certified, 1200W RMS at 1 & 2-Ohm | Hi-Res certified sound, 1200 watts RMS for deep bass, stable at low impedance loads, compact chassis for easy sub install" brand: "alpine" price: "¥171221" currency: JPY in_stock: true reviews_count: 5 url: https://www.desertcart.jp/products/637699334-alpine-s2-a120m-s-series-class-d-mono-subwoofer-amplifier store_origin: JP region: Japan --- # 1200W RMS power output Hi-Res certified sound clarity side-panel controls for easy tuning Alpine S2-A120M S-Series Class-D Mono Subwoofer Amplifier, Hi-Res Certified, 1200W RMS at 1 & 2-Ohm | Hi-Res certified sound, 1200 watts RMS for deep bass, stable at low impedance loads, compact chassis for easy sub install **Brand:** alpine **Price:** ¥171221 **Availability:** ✅ In Stock ## Summary > ⚡ Power your bass, own the vibe. ## Quick Answers - **What is this?** Alpine S2-A120M S-Series Class-D Mono Subwoofer Amplifier, Hi-Res Certified, 1200W RMS at 1 & 2-Ohm | Hi-Res certified sound, 1200 watts RMS for deep bass, stable at low impedance loads, compact chassis for easy sub install by alpine - **How much does it cost?** ¥171221 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/637699334-alpine-s2-a120m-s-series-class-d-mono-subwoofer-amplifier) ## Best For - alpine enthusiasts ## Why This Product - Trusted alpine brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Sleek:** Slim chassis fits seamlessly under seats or in shallow spaces without sacrificing power. - • **Smart Remote Turn-On:** Selectable 3-position remote turn-on switch ensures perfect timing for powering your system. - • **Unmatched Bass Power:** Delivers a thunderous 1200W RMS at 1 & 2 ohms for deep, distortion-free bass that commands attention. - • **User-Friendly Design:** Side-mounted gain and crossover controls make fine-tuning effortless, even in tight installs. - • **Hi-Res Certified Audio:** Experience crystal-clear, high-resolution sound that elevates every beat and bass drop. ## Overview The Alpine S2-A120M is a high-performance Class-D mono subwoofer amplifier delivering 1200 watts RMS at both 1 and 2 ohms. Hi-Res certified for pristine sound quality, it features a compact design with side-panel controls for easy installation and tuning. Its innovative selectable remote turn-on switch and robust power output make it ideal for driving demanding subwoofers with clean, distortion-free bass. ## Description PRODUCT OVERVIEW Entry-level sound just got elevated with the S2-A120M Mono Amplifier. Its sleek design houses an Alpine Class D Amplifier Circuit with 1200W of powerful bass performance. PRODUCT FEATURES Unparalled Power - Alpine’s S-Series S2-A120M 1200W Mono Amplifier is the perfect solution for unparalleled power and performance on a budget. With a power output of 1200W at a 1ohm or 2ohm drive, this mono amp is capable of driving even the most demanding subwoofers, delivering clean and distortion-free bass for a wide range of applications. Simplified Installation – The amplifier was intentionally designed with sound controls located on the side panels, instead of the top panel, making it easier to access gain and crossover controls when installed under vehicle seats or in shallow-depth locations. Removable end caps were added to cover the side controls and connections, providing a clean, sleek finish to the amplifier. MAIN FEATURES 1200W Mono Amplifier Alpine’s Class D Amplifier Circuit Two-Sided Terminal Layout Built-in Selectable / Adjustable Crossovers Optional Remote Bass Knob Compatible (required RUX-KNOB.2 or RUX-H01, sold separately) TECH SPECS Dimensions: 13.1” W x 2.25” H x 8.25” D Weight: 8 lbs, 11 oz Power Rating: 14.4V, 85dB Frequency Response: 20Hz – 400Hz Damping Factor: >750 WHAT’S IN THE BOX (x1) S2-A120M Mono Amplifier (x2) Connection end covers w/4 attachment screws Owner’s Manual “Birth Sheet” that certifies by measurement the actual power of the amplifier in the box (x4) Self-tapping screws (x1) Hexagon wrench Alpine Registration Card Alpine Limited Warranty Sheet Tips sheet for power supply wire connections ## Features - With a power output of 1200W at a 1ohm or 2ohm drive, this mono amp is capable of driving even the most demanding subwoofers - New to the Next-Generation S-Series amplifiers is a new selectable remote turn-on circuit, a three-position switch that ensures the amplifier turns on and off at the proper times. - Intentionally designed with sound controls located on the side panels, instead of the top panel, making it easier to access gain and crossover controls when installed - Delivering an impressive 1200 watts of power at both 1 ohm and 2 ohm, the S2-A120M is fully capable of providing ample power to two Alpine S-Series 10” or 12” Subwoofers ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0C1HXB8DL | | Brand | Alpine | | Customer Reviews | 4.4 4.4 out of 5 stars (25) 4.4 out of 5 stars | | Included Components | S2-A120M | | Item Dimensions | 5.7 x 21 x 33.3 centimetres | | Item Weight | 3.63 kg | | Manufacturer | Alpine | | Manufacturer Part Number | S2-A120M | | Material | Metal | | Maximum Output Power | 1200 watts | | Maximum Supply Voltage | 14.4 Volts (DC) | | Minimum Supply Voltage | 14 Volts (DC) | | Model Number | S2-A120M | | Mounting Type | Surface Mount | | Number Of Channels | 1 | | Number Of Items | 1 | | Output Power | 1200 Watts | | Specification Met | FCC | | Unit Count | 1.0 count | | Upc | 793276085153 | ## Product Details - **Item dimensions L x W x H:** 5.7 x 21 x 33.3 centimetres - **Manufacturer:** Alpine - **Maximum supply voltage:** 14.4 Volts (DC) - **Minimum supply voltage:** 14 Volts (DC) - **Mounting type:** Surface Mount ## Images ![Alpine S2-A120M S-Series Class-D Mono Subwoofer Amplifier, Hi-Res Certified, 1200W RMS at 1 & 2-Ohm | Hi-Res certified sound, 1200 watts RMS for deep bass, stable at low impedance loads, compact chassis for easy sub install - Image 1](https://m.media-amazon.com/images/I/41PJB2IbBgL.jpg) ![Alpine S2-A120M S-Series Class-D Mono Subwoofer Amplifier, Hi-Res Certified, 1200W RMS at 1 & 2-Ohm | Hi-Res certified sound, 1200 watts RMS for deep bass, stable at low impedance loads, compact chassis for easy sub install - Image 2](https://m.media-amazon.com/images/I/41DQ8Uhvp+L.jpg) ![Alpine S2-A120M S-Series Class-D Mono Subwoofer Amplifier, Hi-Res Certified, 1200W RMS at 1 & 2-Ohm | Hi-Res certified sound, 1200 watts RMS for deep bass, stable at low impedance loads, compact chassis for easy sub install - Image 3](https://m.media-amazon.com/images/I/31p4tFmA1BL.jpg) ![Alpine S2-A120M S-Series Class-D Mono Subwoofer Amplifier, Hi-Res Certified, 1200W RMS at 1 & 2-Ohm | Hi-Res certified sound, 1200 watts RMS for deep bass, stable at low impedance loads, compact chassis for easy sub install - Image 4](https://m.media-amazon.com/images/I/31gIBtlfEUL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worth buying *by on Reviewed in the United States 14 July 2026* Works good! Lot of bass!!! ### ⭐⭐⭐⭐⭐ All about the bass *by on Reviewed in the United States 13 October 2025* Used for two twelves in a custom box for my Jeep Wrangler. It is obnoxious which was the goal. 😂 ### ⭐⭐⭐⭐⭐ Great price *by on Reviewed in the United States 17 November 2025* Great power to run my 2 12 in subs ## Frequently Bought Together - Alpine S2-A120M S-Series Class-D Mono Subwoofer Amplifier, Hi-Res Certified, 1200W RMS at 1 & 2-Ohm - Alpine RUX-KNOB.2 Remote Bass Knob - Kicker 46KISLOC2 K-Series Stereo Line-Output Converter w/Remote Turn-On Output --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/637699334-alpine-s2-a120m-s-series-class-d-mono-subwoofer-amplifier](https://www.desertcart.jp/products/637699334-alpine-s2-a120m-s-series-class-d-mono-subwoofer-amplifier) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-14*