Your Fav EL34 and why?

Siemens; for SQ, and price. See your local Ramms Lab dealer.

The best ever EL34's in my opinion is a toss up between Genelex KT77 and Mullard EL34 (XF1 or XF2).

Lots of other NOS varieties were made and many of those are better than current production.

Of current production my favorite is Tesla E34L, and then probably the Wing C. All EL34's sound different, so depending on your amp, bias point, associated (input) tubes and other factors, there is an unending debate as to what might be your favorite.

I will say that beyond all other factors, the Mullard is probably the best EL34 that was ever made, if judged only by it's durability and longevity. There are thousands of Dynaco amps that are still in service with their ORIGINAL Mullard EL34's, factory installed 42 years ago (still test perfect and still running strong).

Thousands of other Dynaco's have been stripped of their original Mullard EL34's and then resold with brand new Russian tubes :^).

Wonder what they do with all those old original Mullard tubes? They wouldn't be selling them at Ebay or using them in their OWN high end gear :^?

Uh, Thanks, Avguygeorge. I'm not sure what all that means however.

Albertporter
I do appreciate it much. The EL34's application is bias dependant? Huh.

They aren't all the same, that I get. Now ya gotta add in what the bias point is?

OK then, how about at 70mv for instance. Just out of the clear blue.