JJ EL34 or E34L


I have read that the JJ tubes with the E34L logo will produce more power than one that has the EL34 print. I do have two quads of both,however one of the tubes of the E34L camp is bad.If the above is true will a tube from the EL34 group make a audible difference? My Anthem amp has seperate bias pots for each tube. Any advise from the group will help me greatly.
south43
Hey, don't do anything premature with your Sieman! Roll that tube!

Sincerely, I remain
Wow Clueless we must be on the same page. That's exactly what I did and ya no what? The music is sounding sweeter than ever. I got some siemans in yesterday and now I like what the JJ's are doing so much I don't want to take them out. But clueless ya no I am going to try those siemans soon. Stay tuned. Bret
South43. I have heard that you have to bias the E34L higher than the EL34 likes to go to really make them get up and go. Don't ya love tubes!

Sincerely, I remain
Hi Clueless Yes I have installed the 3 E34L and 1 EL34 with no odd affects. I figured as long as the bias on all four are the same I should stay above water. I looked at all four tubes before plugging them in and they looked the same physically. Stay tuned. Thanks for your input. Bret
You are correct. The E34L will run at a higher bias. I do not run these or have an Anthem. If you run them at the same V I bet they are very similar. Try it out. You will not hurt anything. If you have not already done so I would ask the same question at the audio asylum.com tube section. Lots more EL34 folks there who might have experience right on point.

Sincerely, I remain