This is my new amp. The alpine mrd-m500. This amp is awesome. Power and percision in one little metal box. I wired all this so the wires all over the place. But it took me over a day to get it a good install. This amp pounds out 500 watts rms, and 900 peak. Perfect for my sub and for listening to. It also has all digital controls. I can digitally change the crossover, subsonic filter, input level, parametric equalizer, and the bass thingy thing. It also desplays the tempature, input voltage, and input current. This amp is great. I also have the optional digital remote. I can control the amp right from my front seat. It's definetly the best amp ever. The amp sounds great, runs pretty cool, and is just da bomb diggity!