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RE: In what spirit do you ask the question ??..

Posted by tube wrangler on March 1, 2017 at 20:48:45:
I think you're probably right on nearly all counts.
Interestingly, on JJ's website, there are several hints that the
2A3-40 handily outperforms their 300B. Pretty strong hints at that!
That's what has happened with me. For a long time, I just popped
the 2A3-40 into amps that had been voiced for other 2A3s-- the
likes of old RCA's, The EML mesh and solid-plate tubes, and etc.
Even Sovteks and Electro-Harmonix (a premium Sovtek-- has
gold-flashed grids, and does sound better. Looks like the
same plate).
Kevin Hayes (VAC) had once mentioned that you had to voice
for the JJ tubes... they're different.
That they are! If I voice an amp for them, other tubes won't
be at their best. If I voice for those at their best, the
JJ sounds good, but fairly ordinary.
It's interesting that when you get the JJ 2A3-40 settled into
what it really wants, it can and will give you everything you
could ever ask for about recorded music. It will sound just
like that expensive Berkeley Audio Design DAC that costs
$16,000.00 That's saying a lot because that thing is GREAT!
-Dennis-