The Pass Labs Aleph P with remote and balanced inputs is roughly $1700-$1900 average used range. Is this too high for you? It's basically a passive unit, unless you crank it past 3oclock, I believe, and is a definite class A rated passive.
Anyway it's all I can think of, and it doesn't affect the sound really..great product for a passive. It's built like a tank as well. Good luck.
Oh, btw, stay away from the Adcom GFP-750!...it's not as good as ratings indicate (can you say payola?!!!).
oood Luck