Trelja, 10,000 hours for NOS tubes. I have heard that family of Chinese 12AX7's, 12AU7's, and 12AT7's have a considerably shorter lifespan. The good news is that they are cheap, and have low noise, which makes them a good candidate in the phono section
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