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The Alpine R2-A75M is a single-channel Class D mono amplifier rated at 500W RMS with a 750W peak. It is the next generation of Alpine's R-Series mono, about 15% smaller than the R-A75M, with speaker terminals grouped on one side and gain and crossover controls under a removable top plate. A birth sheet documents the measured output of the unit in the box. It suits drivers powering a subwoofer who want real rated power in a compact chassis; rivals in this class often cost less but rarely publish a measured birth sheet or match Alpine's install-friendly layout.
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Lowest price we've seen: $499.99 on Nov 14 at Best Buy. Tracked across 12 stores since Nov 14.
Owners rate it highly, praising clean power, compact size and the birth sheet that confirms output. Complaints are few and mostly about the price relative to budget amps and the need to pull the top plate to adjust settings.
The Alpine R-Series R2-A75M is a 750-watt, 1-channel Class D mono amplifier for car audio systems. It is a next-generation R-Series model with a footprint 15% smaller than the previous R-A75M.
All speaker connections are on one side of the amplifier. The gain and crossover controls sit on top under a removable plate. The chassis has integrated mounting feet to simplify installation.
An optional remote bass knob can be added. It requires an RUX-KNOB.2 or RUX-H01, sold separately.
