Hi all
I now hear no difference on test tones with EQ on or off. I hear a very slight degradation on the Spanish Harlem track of audiophile fame, but nowhere else.
I think the cause is a noisy environment, if moving cables and what not around affects it.
I will publish some revised measurements (balanced out) on AV Nirvana, and possibly a few seconds of that track if it doesn't break copyright.
Thanks for all the suggestions. I need to do something about my AC or EMI situation if I want to improve things here.
The 976 is a stellar product at its price point.
Phil