Well you got some answers for your pre-amp tube - I wpn't take issue with Rodmans response if you can stand the price and the concept is sound. You might find a similar sound in new or recent production tubes, albeit not up to Rodmans standards.
However, you opened with a question about EL34's for your amp. I'm NOT familar with the tube you are using, but of the EL34's I have used over the years, I found the Tesla E34L to have all of the mid-range clarity and high frequency extension I wanted (sometimes even a tad too much FOR ME). And they were highly regarded by many. I'm not sure if this is similar in the new JJ's - I've not heard them.
FWIW.
However, you opened with a question about EL34's for your amp. I'm NOT familar with the tube you are using, but of the EL34's I have used over the years, I found the Tesla E34L to have all of the mid-range clarity and high frequency extension I wanted (sometimes even a tad too much FOR ME). And they were highly regarded by many. I'm not sure if this is similar in the new JJ's - I've not heard them.
FWIW.