Next-Generation S-Series 1200W Mono Amplifier




Next-Generation S-Series 1200W Mono Amplifier


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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.


  • 1200W Mono Power 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)

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

Tech SpecsArrow

Dimensions: 13.1” W x 2.25” H x 8.25” D
Weight: 8 lbs, 11 oz
Power Rating: 14.4V, < 0.1% THD +N
Power Output: 600W x 1 @ 4Ω, 1200W x 1 @ 2Ω, 1200W x 1 @ 1Ω
S/N Ratio: >85dB
Frequency Response: 20Hz – 400Hz
Damping Factor: >750
CTA-2006-D Certification

Owner's ManualArrow

Owner's Manual

S2-A120M Owner's Manual

Unparalleled 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.

Flexible Application

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. 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 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.

Power Dual Subwoofers

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, ensuring exceptional sound quality and optimal performance.
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