Crayon Sky Music

What are some physical indications tone tubes needing replacement?

I play guitar on a Fender Blues Junior. I have had the amplifier for about three years and I'm still using the stock tubes.

Probably should change at all. Power tubes should be changed once a year if he plays regularly. prior valves should be changed every two years. This is optional. HAVE preamp tubes not "be changed until they leave. But tone will suffer if they are exhausted. You'll have better tone and more gain if your game fresh tubes. I personally replace all the tubes at once, and I do every year. Make sure you buy matched tubes for the preamp and power amp. Some tube amps require internal adjustments to get the best tone of the new tubes. At least the big Marshalls do. Hope this helped. Have a good day.

Fender blues Junior Demo #2