ALPINE R-A75M
R-Series mono subwoofer amplifier — 750 watts RMS x 1 at 2 ohms
GENERAL FEATURES: 
mono subwoofer amplifier
500 watts RMS x 1 at 4 ohms (750 watts RMS x 1 at 2 ohms)
CTA-2006 compliant
variable low-pass filter (50-400 Hz, 24 dB/octave)
variable bass boost (0-12 dB at 50 Hz)
variable subsonic filter (min-40 Hz, 24 dB/octave)
optional RUX-KNOB.2 wired remote level control
preamp and speaker-level inputs
speaker wire to RCA adapter required for speaker-level input
preamp outputs
wiring and hardware not included with amplifier
4-gauge power and ground leads recommended
fuse rating: 40A x 2
dimensions: 9"W x 2-1/16"H x 7-1/8"D
warranty: 1 year
 
For loud and realistic-sounding bass
Alpine's R-Series R-A75M amplifier cleanly reproduces the bass in your music so you can enjoy the enhanced realism you want in your vehicle, even when you're playing high-res music. They've applied some hot technology from their top-of-the-line X-Series amplifiers into this R-Series amp. This includes the use of high-efficiency transformers and premium custom capacitors in the amp's construction. Dual "Sierra" feedback circuitry decreases distortion by correcting the output using the original input signal.
 
How much power?
The R-A75M mono subwoofer amplifier puts out up to 750 watts RMS, conveniently and perfectly matching the power ratings of Alpine's R-Series subwoofers. Advance Class D amp technology allows this amp to be built so small it'll fit in almost any of the tiny spaces available in many cars and trucks these days. 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-KNOB.2 remote bass knob to control your bass from the dash.