5.2.3 Life Span
Power tubes last 1 to 3 years, depending on care, volume and frequency of
use of the amplifier. If you use your amp only once a month, then the tubes
will obviously last longer. Really… We have heard tubes that are over 10 years
old, but it was not a good thing. Tubes age in a very slow manner, slow
enough for the artist to get used to the changing tone. To keep things fresh
and to keep your tube dealer in business, we recommend re-tubing, cleaning
and biasing once a year if the amp is used frequently.
