KT88 tubes branded VAC have been Teslovak (Tesla). This tube is now JJ KT88.
And, I agree, the sound is terrific. I think they are the best of the current KT88 tubes. Others like Svetlana or EH, I guess it depends on your preferences.
And, I agree, the sound is terrific. I think they are the best of the current KT88 tubes. Others like Svetlana or EH, I guess it depends on your preferences.