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Best tube rolling options for VAC Ren MkIII preamp

I have read most VAC threads on Audiogon and pieced together some information on tube rolling for VAC 300.1a and VAC preamps (Renaissance Mk III is what I own). Was hoping to get in one thread others' experience/POV/advice on what the best tube swapping options have been for their VAC gear, or other high end amps/preamps that take similar tubes (e.g., 12AX7, 12AU7, 6sn7), or if stock tubes from VAC ended up being the best choice. Thanks in advance for any insights. If I'm missing an definitive thread on this pls redirect me.
podeschi

Showing 3 responses by fplanner2010

fplanner2010
283 posts
 
My Recently added seimens 7308s into my Ren sig mk2a made a huge. Difference - deeper and tighter bass, more extended highs, etc. Overall a much better, well balanced sound. Wouldn't have believed it out of 2 tubes.

Added Black treasures as the front 4 tubes for each 300.1 about a year ago. Got slightly sweeter,more extended highs.

Good luck.
fplanner2010
283 posts
 
Great!! Although we have great VAC in common, our systems
Are quite a bit dissimilar since our speakers are so different. I heard a difference immediately, that has just kept getting better at about 40 hours so far.
fplanner2010
283 posts
 
Dev- Glad you like them!! I couldn't believe it either, but there is no substitute for hearing them yourself in your own system.

I have about 50 hours on mine so far and they are still improving - probably the best "bang for the buck" improvement I've ever made to my system. :-) Enjoy!!
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