(RCA "clear tops" generally refer to their 12AU7's, 6201's are a substitute for 12AT7's) ...since the Thor TA-1000 has plenty of gain, I use black plate 5751's with their lower gain in mine. Telefunkens are generally thought to be "brighter" and better for older vintage equipment.
- As an aside, a knowledgeable friend compared black plate vs. grey plated tubes and could not hear much of a difference.
- As an aside, a knowledgeable friend compared black plate vs. grey plated tubes and could not hear much of a difference.