Why do NOS Tubes sound better than new tubes?

Is manufacturing really that backwards in todays techno world? What is the real reason that todays tubes cannot equal the tubes of yesteryear?

tubed108-26-2011 2:39pm

rrog Details Discussions Posts This discussion Message User 1,958 posts 08-27-2011 at 01:04pm Copy Comment URL Report Comment Edit Delete Better trained people and better materials back then. As far as one tube sounding better than another, it depends on the application.