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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 6 responses by podeschi

podeschi OP
303 posts
 
I will say putting Ken Rad 6sn7s in the two outer tube locations of the 300.1a gives energy and low end presence without taking away from pristine, smooth clear highs this amp naturally offers.
podeschi OP
303 posts
 
did some swapping this weekend. nothing matches stock tubes for clear clean highs on vac 300.1a. anyone want to buy barely used (1 hour) 2 matched pairs of Ken Rad 6sn7s drop me a line.
podeschi OP
303 posts
 
Will do, Mr. Wig.
podeschi OP
303 posts
 
Not on a nos tube. I didnt need more than an hour with stock input tubes to appreciate their sonic character. Unlike components and cables i havent heard much change over time with tubes even my sophia 6sn7 tubes. Maybe my ears are not evolved enough. :-)
podeschi OP
303 posts
 
Ok i clearly need to make a second run at this! I would let the amp warm up for an hour before critical listening but didnt burn in jan, ken rad etc input tubes. I will do that and give it a second listen. Part of my impatience was tied to others' comments how it was hard to beat vac stock tubes.
podeschi OP
303 posts
 
I should add...what i find hard to replicate is the open extended airy highs of stock 6sn7 tubes
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