A really dumb tube question


I'll make this quick.
This is a legit question.
In a linestage application,can a 12ax7,12au7 or a 12at7 be interchangeable?
Im soon getting a linestage that uses 12at7's.
I have a few NOS 12au7's.I was wondering if I could use them?
Thanks-
david99

Showing 1 response by swampwalker

12AT7s are interchangable w/E81CC, ECC81, ECC801s and several others in most line stages (6201s, I think). Check Joe's Tube Lore over at AA.