What to put under my VAC AMP/ PREAMP??

I recommend the Marigo Audio Mystery feet. They are better and less expensive than the Shun-Mook feet. I use them under all of my electronics and speakers.

I prefer Ultralinear with my Vac Phi 300.1 as well. This seems to be the concensus. That said, I got a different opinion from another party last week. His speaker was quite efficient. I believe in the 94DB range. I don't want to give any details, to respect his privacy. Anyway, he preferred Triode operation, and Balanced as well. This may have had much to do with the preamp he was using, as it may have been optimized for balance operation. My speakers are 87db, and Ultralinear is clearly better. However, if my speaker was more efficient, I would check out Triode again. Barrelchief, I would be curious as to the efficiency of your speaker.

Actually, my speakers are very efficient. I have the Daedalus DA-1, which are 96db.

From my VAC Ren Mk-II pre, I am running single-ended cables, as recommended by Kevin.

I think so much of this comes down to system synergy and personal preference.

Fjn04, since you prefer ultralinear with your 300.1, it would be interesting to see if you prefer triode on your buddy's system, as he does.

I now have Finite Elemente Cerapucs under both my VAC Phi 2.0 preamp and CD source(3 each). Sound got noticeably better - details coming through more clearly and bass got a little cleaner and tighter. I did this a number of months ago and just realized that others might benefit from my findings. They are also pretty cool to look at.....

I am using a pair of Phi 300.1 in balanced mode. I like the triode mode better. My speakers are the ESP Harps. These are 96db efficient. A friend brought over his Bella Extremes which are a fully modded Antique Sound Labs Amps that use V Caps which are Teflon. They are half the power, but seem to be more transparent and more dynamic. He was using Winged C Cryogenic treated 6550 tubes. I don't know if it was do to the tubes or the caps. I know Kevin does not like Teflon. Has anyone else tried these winged c 6550 in there amps.