I have some car audio equipment I'm getting rid of. I have 3 amps. An Alpine MRP-M500, A Belva 200ab and an Alpine 3522s. The Alpine MRP-M500 and Belva are both mono block. The Alpine is D Class, the Belva is ab class. The 3522s is a 2 channel, bridgeable, class ab amp. All 3 work just fine. I recently crashed my car and have no use for the stereo anymore.