02-24-09: Johnnyb53
You have a PS Audio GCC-250 on the way?
I'm jealous.
Told 'ja.
I am a bit surprised that the PS Audio XStream speaker cables don't work so well for you, given that they're from the same vendor. I have a biwire trio of those for L-C-R, and they were a mighty step up in all parameters from the big box MIT 750s I'd been using before. However, they're connected to a MOSFET class A/AB amp.
What are you using for a power cable to your GCC-250? Most reviews I've read of class D amps indicate that their sound changes significantly with different power cables, strips, conditioners, etc. My class D integrated is an Onkyo A-9555, and after trying out 3 or 4 power cables, my preference went to a PS Audio Prelude.