Originally Posted By: JohnK
Jamin, both the amplifier in the 875 and the amplifiers in the 2400 and 906 amplify transparently within their power limits, so there's no reason why any of them would sound any better than the others.

Thanks JohnK! It sounds like I can replace both NAD amps with the receiver! Very exciting. I just hope it sounds at least as good as the NAD pre/pro (S170). I'm mainly getting it because I want uncompressed audio from my Blu-ray's via HDMI.