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. 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. Specifications: 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 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 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): 750 Weight: 4.0kg Heat Sink (WxHxD) mm: 352 x 57 x 210