This link points to more info about AV Room Service. A Stereophile article really caught my eye and in it Norm talks about his thinking for the right way to do it...
https://www.audiocircle.com/index.php?topic=190313.msg1991004#msg1991004
Here is the Stereophile article - checkout this NWAA labs facility... one of a kind and super cool. The scale reminds me of the Dynaudio Jupiter measurement facility:
https://www.stereophile.com/content/nwaa-labs-measurement-beyond-atomic-level
Thanks for posting this, Jim. Very informative and helpful.
Yep, Norm Varney, his expertise and his products are the real deal.

Was just chatting with a buddy about audio systems, and we were discussing that the 3 top-most important factors for creating an engaging and involving Hi-Fi audio system are:
1) Room Acoustics (which the EVPs can really help with as they really help to quiet the room)
2) Power Distribution, including power distribution and power cords
3) Ground-plane noise reduction
All the rest, source and amplification components, preamps, amps, and speakers are next, and a matter of, in my experience, "flavor to taste."
Some guys love tube gear and others solid-state. Some like box speakers and other guys prefer electrostatic panels or open-baffle. Many of us love Danny's speakers (and rightly so!) and some like Magicos.
All are wonderful, but....different. IMHO, it's kinda like deciding which single-malt scotch you prefer. Lots of wonderful single-malts out there, but they're all a bit different from each other.
But even the best Esoteric Grandioso Supreme electronics or Magicos, however, can't fix sh*tty room acoustics or crap, noisy power distribution from the home's AC mains.
The key point being here is everyone's preferences for single-malt or electronics, speakers, etc are
equally valid and to be respected. But, from being in this hobby all the years I have, I've learned the that those top three foundational elements listed above have to be in place to create and engaging and involving musical listening experience.
Cheers, guys, and as Hans Beekhuizen says, "Enjoy the music..."