Tube Life Question: 12AX7 Drivers


Hello.

OK, here's a question for some of those out there who have lived with 12AX7 drivers. How long have they lasted in your experience? I used to have an amp that used them, and after 6 years, they still seemed fine. Now that I again own an amp that uses these tubes in this application, I'm wondering what the actual life expectancy is - 5 years, 10 years, 25 years???

Thank you in advance,
Joe
trelja
Ben, not to be a wiseguy, but you might want to check either the guy you're buying tubes from, the bias settings on that amp, or what the voltage coming out of the wall actually is. Honestly, you are seeing probably the worst tube life I've ever encountered.
Trelja,thanks for your help, my amp is auto bias, though voltage is not bad I use power regulator,the only logic reason
left is the tubes I have bought EH12AX7 s were bulk version and they might be terrible short life,I will try to buy original box version.
Ben what you describe as dull.dry and lifeless others might perceive as burn in. Try the Sovtek LPS it might be right up your alley and are supposed to be quite rugged.