This is a really basic question, but I'm utterly ignorant when it comes to tubes.
I have come across a few old tektronix measuring equipment being disposed of. inside there were several tubes and tube types.
one of the more abundant tubes in my catch are 6DJ8/ECC88 amperex tubes.
I was wondering if i can stick these into my bellari vp129 they "fit" but will they "blow up" or "ruin" or "bring the pain" to my equipment?
the current tube in the bellari is an ecc83, I've heard reports of improvements when a "better" tube is used. Since i have these for free, I figure why not?
thanks for your help
PS I also have some other bigger fancier looking tubes, I don't need them, any guidance on how to go about testing/selling them?