NOS tubes


My question is this, why are NOS tubes percieved/ or not, said to sound better than newly manufactured ones, with all the new technology and manufacturing techniques and materials you would think the opposite to be true, but then again I guess it’s the same as solid state vs. tubes,
Thanks,
Rob
wownflutter
What amp did you buy wow?  If you decide to start rolling tubes, it would be best to work with a good tube dealer (Brent Jessee, Andy Bouwman at Vintage Tube Services or Kevin Deal among others) rather than try your luck on ebay.  They can offer educated opinions on which tubes might work for you and you can trust that you are getting what you paid for.  It will save you money in the long run.
I always enjoy talking to Mr. Deal. Very informed and reasonable man. He is, in his arena, an artist and artists are sometimes misunderstood.
@tomcy6 I got a rogue audio Cronus magnum II, loving it so far, just now getting broken in