Life span of tubes?

Has anybody experiences with KT88's' life span? I run an McIntosh MC 2000 about 6 hours a day average. When do I have to worry about the tubes?
What happens first when a tube indicates it won't go on much longer?

aida_w10-16-2001 10:32am

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detlof Details Discussions Posts This discussion Message User 1,899 posts 10-22-2001 at 06:10pm Copy Comment URL Report Comment Edit Delete Rcprince is right of course. Haven't seen any NOS Gold Lions or Monarchs for quite a while. Occasionly you can find one or two used at Billington's in the UK and they cost lots of Sterling. To get a feel for prices of other tubes, I suggest you check Ebay regularly to get a feel how the market is.
rcprince Details Discussions Posts This discussion Message User 3,074 posts 10-23-2001 at 12:16am Copy Comment URL Report Comment Edit Delete Detlof, that's because I'm hoarding over 50 of them! Told you I had a lifetime supply......
detlof Details Discussions Posts This discussion Message User 1,899 posts 10-23-2001 at 05:55pm Copy Comment URL Report Comment Edit Delete Lucky you Rcprince and a long, long life to you and your tubes of course ! (-:

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