good sounding old school 90's SONY Xplod XM-2150GSX, 760 watt 2/1 Channel Amplifier, was just re-tested and sounds great real clean sound the RMS rating is I think 200 watts x 2, conservative for sure, but peak watts I don't think it could do 760 watts unless Sony uses some magic formula or measures that into some crazy high frequency, it all works great, level controls, crossover settings, it has a few marks and scraps lettering worn here and there, still it's used and that doesn't affect how it works or sounds