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Alpine S2-A120M S-Series 1200W Mono Amplifier

Alpine S2-A120M S-Series 1200W Mono Amplifier

Alpine S2-A120M S-Series 1200W Mono Amplifier



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 next generation S-Series S2-A120M mono subwoofer amplifier makes it a lot easier to get great bass in your vehicle, delivering up to 1200 Watts RMS power @ 2 Ohms. This massive power output allows to even run multiple subs from a single amplifier. A variable bass boost allows you to dial in some extra punch and impact for more low-frequency enjoyment. You can even add an optional wired remote to control the level of bass from your front seat.

A built-in low-pass filter puts you in command of the frequency spectrum that reaches your sub. 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. 



  • Terminal Layout: Two-sided
  • Included terminal covers
  • Screw terminals (for speaker and power cables)


  • Class-D Amplification (Digital)
  • Channel Design: Mono Channel
  • 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
  • Crossover: Variable Low-pass Filter (LPF)
  • Adjustable Gain Control
  • Bass EQ
  • Remote Bass Control (RUX-KNOB2) Ready


RMS Power Ratings

  • Per Channel into 1 Ohms, 14.4V (≤1%THD+N): 1 x 1200W
  • Per Channel into 2 Ohms, 14.4V (≤1%THD+N): 1 x 1200W
  • Per Channel into 4 Ohms, 14.4V (≤1%THD+N): 1 x 600W

Sound Tuning

  • Crossover: Variable LPF: 50-400Hz (-24dB/oct)
  • Bass EQ (+12dB)


  • Power Requirements: 14.4 V.DC (9 - 16 V allowable)
  • Input Sensitivity (RCA Input): Hi: 0.5V - 10V / Low: 0.2V - 4.0V
  • High Level Input with automatic power on
  • Frequency Response (+0, -3dB: 1W into 4 ohms): 10Hz – 400Hz
  • THD+N (@ 10W into 4 Ohms): <0.03%
  • Damping Factor: >750
  • Weight: 4.0kg


  • Heat Sink (WxHxD) mm: 352 x 57 x 210