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Questions about tubes and gear that glows. FAQ

Re: no problem.

We just had a misunderstanding as to what each of us was trying to say.

I agree that the 6550 and KT88 are not always drop-in replacements. Much like 6DJ8 versus 6922. Many times that can be direct replacments.

It is always a good idea to contact the maker of the gear before substituting tubes. Generally everything will work just fine. But their are times, i.e. VT130/KT88 where making the switch can have some rather bad results.


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