since no one has mentioned Plinius, let me suggest that a used Plinius 8100 (or 8200 with 175 watts)would be worth considering (there is an 8100 integrated on Audiogon for $800, and you also get a very decent preamp and I think phono). But I'm afraid I don't know how well they would synergise with your speakers.
Good luck,
David
Good luck,
David