How far over the limit can I go


I am currently just past the recommended 2000 tube life on my power amp. (Audio Research Ref 110).  It still sounds glorious. Am I playing with fire here?  Or, will I notice some degradation in sound that will prompt the re-tube.  I think it's about $1,000 to retube.  

Thanks guys!!!
jemmer01

Showing 1 response by jond

Usually I wait until a tube gets noisy to worry about it, I've never had a power tube go bad and damage my amp. I have had rectifiers go out twice once taking out a resistor another time blowing a fuse. Probably a wise thing to do is get a retube now and use your current tubes as emergency backups as tubes can and go get noisy and the least convenient times.