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

ahendler Details Discussions Posts This discussion Message User 416 posts 08-26-2011 at 08:31pm Copy Comment URL Report Comment Edit Delete Lots of manufacturers back then A lot of competition Now only a couple plants make tubes. No competition