AQ2200D. That's what I'm looking for right now. Check out the size comparison as well. That amp seems to be a good bang for the buck as well as a good smaller size chassis. Stetsom is supposed to pack a punch for the size chassis as well, but I can't find prices on them. I didn't see a subsonic filter on the stetsom amp I was looking at, so I passed on it as I use a ported enclosure and don't want to buy fmods to block the subsonic frequencies.