u/Bananajoemillemila

So I noticed that recently there have been some issues with my 2525H:

1. the on-off switch light has been about a year that sometimes comes and goes without anything happening to the amp
2. i noticed that the bass if cranked has a very noticeable sag to the sound, much more than it ever has

Can this be caused by the power tubes being tired?

The amp has 3/4 years and it has always been used at Master 6 with an attenuator (before was the HB PA 100, recently the Torpedo Captor X)