Depends on the tubes - I know the NOS RCA black plate tubes last about 5000 hours (input tubes) while others are supposed to last 2000 hours.
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
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