So you have a great hi end stereo preamp, but

Why can't the OP use a HT processor that has analog pass through so the analog signal bypasses it's DAC, straight to the amps?

@millercarbon

"Oh, he can. For sure. Probably does. So what? Its still ruining the sound merely having the thing in the same room. People probably think I’m kidding, or exaggerating. I am not. I tried all this stuff, and with much better processors than any avr! HT is a wasteland. Guaranteed to bring down any system, any price, even just being in the room and turned on. Not even necessary to connect it to anything. Its that bad."

Nonsense.