Coincident Technology Dynamo 34SE MKIII

When I hear (literally) how good many new tubes are, and how inexpensive they are relative to certain more "precious" vintage (or Chinese) ones, It makes me glad they exist. And yeah, a pair of 7581As are fairly inexpensive...I bought mine from "local" (MA) dealer Viva...another cool tube company.

@markwatkiss you are successfully using KT77s?  The manual states not to use different tubes.  Where did you purchase your Tungsols?

Oh, and would you say that the input tubes would be the first to replace?  Thank you!

Actually the Genalex Golden Lion KT 77's were the preference of several audio reviewers.I have yet to acquire an EL 34 that surpasses the performance.I acquired the Tungsols from a private source.Personally I would upgrade the power tubes first followed by signal and then tube rectifier.

Bumping to the top.  Really enjoying my Dynamo!