Members aliensporebomb Posted October 10, 2008 Members Share Posted October 10, 2008 When I got my Mesa Studio preamp used in 1991, it had the original tubes in it. When I sent it to Mesa in 1994-1995 timeframe to be refurbished theyreplaced the tubes for both the preamp and the reverb, they've been inthe unit ever since and the thing just keeps sounding better and better. So they've been in there a minimum of 13 years, I'm not sure if any ofthe original tubes from prior to my owning it are in there but if they arethey're pushing 20 years now. Preamp tubes last a good long time. Link to comment Share on other sites More sharing options...
Members Armitage Posted October 10, 2008 Members Share Posted October 10, 2008 Modern tubes don't last as long. But a reason to replace them systematically, instead of at fail is reliability. If you gig regularly, you want to do preventative maintenance to make sure you don't have a meltdown on stage. Preamp tubes don't tend to fail, they just start getting noisy or microphonic. If your tubes is going "psft... pfft..." or the noise floor has come up, change'm. Link to comment Share on other sites More sharing options...
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