I just got done shopping for a used amp in this range, and I ended up with a Perreaux 2150B. Works in class A most of the time and then in AB up to 200 Watts. It is pretty smooth, though not lush like a Classe or YBA. But what it does have is good sound with plenty of power, which is hard to find in most class A amps. Plus it's built like a tank. I saw another one on Ebay just today. I got mine for about $600 including Shipping. Others that I considered were Forte, Bryston, Aragon (the 4004MKII is a must audition) and YBA audio refinement.
