Best used amp for < $500?

I'll second the comments on the Acurus A150. I've been through several different kinds myself (Carver, Marantz, etc), and settled on the A150 and 100X3 for a 5 channel setup, with the A150 driving the front L/R. You can find clean examples of the A150 for $300-400. It's still the best 2 channel I've heard for under $1000. By the way, while we're on the subject of Mondial Designs, I don't think you can beat the Aragon 8008BB for under $5000 (list is $2750), or the Palladiums for under $10K (list is $5500). I'll admit I'm a Mondial fan, but the sound to value ratio is hard to argue with.

For driving a sub, the PSE Studio IV is simply unbeatable, but it is hard to find. Shouldn't cost more than $400 if you do. Another killer bass amp is the original Belles 150. I doubt you will see one of these on the web though. Too old for most internet audiophiles.

Forte, Van Alstin, Acurus and Rotel are all good choices. Go to featured dealers in this listing. Go to Hollywood sound, he has the Acurus Dia 1oo integrated for 595 and several other models. I have bought many things from Larry, he is totally reliable.

Electron Kinetics Eagle 2. If you see one, jump on it. Vastly superior to NAD and Adcom. The on/off switch is notorious for going out, but can be replaced. Will drive a .5 ohm load all day long. Designed and built by the (late?) John Iverson.

Electron Kinetics Eagle 2. If you see one, jump on it. Vastly superior to NAD and Adcom. The on/off switch is notorious for going out, but can be replaced. Will drive a .5 ohm load all day long. Designed and built by the (late?) John Iverson.