@mapman -- I loved the LTA room as well. They supplied electronics for two rooms. Both were fantastic. Their prototype DAC was impressive. They had the top off and it was nice to see the guts of the design.
@fthompson251 -- The VAC/VSA room was astonishing (as it should be -- large, well treated room with 800k of gear). I had another revelation in the large room with United Home Audio (local DMV reel-to-reel producer). I walked in and heard Dean Martin sounding better than I'd ever imagined he could sound.
The rooms sponsored by Now Listen Here were also solid. The Joseph Audio Pulsars sounded great. I didn't get a chance to hear the Fyne set up.
I enjoyed two rooms with using the the Gryphon Diablo 300. No coincidence, I'm sure.
I skipped a couple of rooms that were playing overly fussy music I didn't like, but found some great music, including stripped down blues, live folk, etc. This was my first show. I might bring a couple of CDs next time and see how that goes.