go for it. your ears will let you now. i have alot of tube equipment. i change tubes all the time and i just listen to the sound,if ican hear that on tube is off. i try another. i admit i been told i have great hearing. go for it!
Tube matching for the SF Line-3
How critical is tube matching? SF makes a big deal of it in the manual but I'd like to swap in some E88CCs (Teslas or Amperexes) that I have but which have not been matched.
Kal
Kal