The Buckeye Stereo Purifi is $1189 or three channel $1699.Can you tell me where to find these Purifi amplifiers? Some have mentioned other Class D amps in these threads that are low cost but good sounding. Can't remember their names.
Multichannel Hypex NCORE and Purifi Amplifier Products — Buckeye Amps - Hypex NCORE and Purifi 1ET400A
A wide selection of multichannel Class D amplifiers built around Hypex NCORE and Purifi Eigentakt modules. Hand built with free shipping!
You would also do just fine with the NC502MP for $749. With an AVR I doubt you will hear an audible difference.