OK, so I received my somewhat custom Uber Monday (thanks again for the above & beyond effort Dave!); plugged it into my Equitech, and have my 300B SET integrated, REL sub and MW Transporter plugged into the Uber (different receptacle pairs of course). I got to listen a few hours Monday evening, then basically had all the equipment unplugged Tues night due to the tornado/thunderstorms that blew thru Oklahoma. Listened just a short while last night, and have got to spend a couple hours here in front of the system this evening.
What can I say that hasn't been said already, and more eloquently than I can....as I told Dave in my 1st email to him after listening--I guess due to the silky black background the Uber imparts, my system has never imaged this well (I'm talking pinpoint imaging and separation now), and the other thing I really notice is how much tighter and impactful the bass is. As I have said before, I barely have the REL sub working, crossed over around 38hz and not much gain (more than once I've been listening to my DA-RMa's thinking the sub was on, only to realize I had forgotten to turn it back on after some system tweak, etc.)...I going to have to adjust the sub down even lower! And the little micro details are coming out and yes, the old cliche, I'm hearing things I didn't realize were there.

Umm, Dave, don't think this one is coming back. And yes, you were right (all of you here on this AC thread and Dave!)--skeptics, on-the-fencers, just give this thing a try!!
Randy