The Alpine “R-Series” line of speakers, subwoofers and amplifiers have a heritage of sound quality you can hear from a block away, and the newly added R-Series amplifiers are no exception. Aside from their best-in-class performance, these amplifiers are tuned to emphasize the characteristics of the R-Series speakers and subwoofers, giving you that legendary R-Series experience. They have a 15% reduced footprint compared to the previous models and are easier to install. If you like your music loud and clear, our Alpine R-Series R2-A150M mono amplifier is for you. It cleanly reproduces the bass in your music so you can enjoy the enhanced realism you want, even when you're playing High-Res music. We built some of our top-of-the-line amplifier technology into this R2-Series amp, including high-efficiency transformers, premium low-noise custom capacitors, and low-distortion dual "Sierra" feedback/correction circuitry. The R2-A150M mono amplifier produces up to 1200 watts RMS @ 2 Ohms, making it a perfect match for the Alpine R-Series subwoofer line. Advanced Class-D amp technology makes this powerful amp small enough to fit almost any location. You can adjust the amp's low-pass filter, bass boost, and subsonic filter to get just the right bass tone. Plus, you can add the optional RUX-KNOB2 remote bass knob to control your bass from the dash. Class-D Amplification (Digital) Channel Design: Mono Channel Top panel controls Thermal Management Control Top Mounted LED Power/Status Indicator Speaker Level Input with remote turn on Crossover: Adjustable Low-pass (LPF) and Variable Subsonic filter Adjustable Gain Control Bass EQ Remote Bass Control RUX-KNOB2 Ready Total Max Power: 2300W Per Channel into 1 Ohms, 14.4V (≤1%THD+N): 1 x 1500W 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 700W Crossover: Variable LPF: 50-400Hz (-24dB/oct) Crossover: Variable Subsonic: 8Hz-40Hz (-24dB/oct) Power Requirements: 14.4 V.DC (9 - 16 V allowable) Input Sensitivity (RCA Input): Hi: 0.4V - 10V / Low: 0.1V - 4.0V High Level Input with automatic power on Cable size: Power Cable AWG 4, SPK Cable AWG 8 Frequency Response: 10Hz – 400Hz THD+N (@ 10W into 4 Ohms): 250 Dimensions Heat Sink (WxHxD) mm: 341 x 65 x 185