how long should tubes last

KT88 vs 300b - does tube type matter when it comes to duration?

hudsonpatrick10-11-2012 2:09am

marakanetz Details Discussions Posts This discussion Message User 5,473 posts 10-11-2012 at 01:52pm Copy Comment URL Report Comment Edit Delete I'd think of another question why simpliest vacuum triode such as 300b worth a lot more than penthode KT88?