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If you are having difficulties with the MRV-M500, try referring to the troubleshooting page.
Background and Identification
The Alpine MRV-M500 is a fourth generation digital amplifier released by Alpine in January, 2013. This model of amplifier can be identified by its name and model number; MRV-M500.
The Alpine MRV-M500 is a black metal box with the brand name and a blue indicator light on top. It is used to amplify audio for sub-woofers in car stereo systems. This model features remote bass control, new snap-on terminal covers, and a 40% smaller chassis. It includes four digital audio channels as well as manually adjustable gain, low-pass filter, and bass equalizer.