EL34 differences in air & stage depth?

Gentlemen, Albert & Lloyd, - A sincere, "Thank You" for your input. First. I'm encouraged that the Shuguang tubes can be bettered!

I've read many good things about NOS Mullards (sonics and longevity) and did understand the GoldLion KT77s referenced were also NOS product. While the Mullard Ebay prices cited don't appear to be out of reach, I'm just not that confident about buying individual, non-matched tubes (the H-1 does auto-bias) and from Ebay, specifically. My short list of candidates has been the current production Gold Lion KT77s and the SED Winged C EL34s. I would very much appreciate your thoughts on those two. I'll definitely add the Siemens and Telefunken AEG to my list. I look forward to any additional input you care to provide. (just fyi, I'm not running Dodd amps...didn't want that to be a "red herring"). Again, "Thank you".

Cordially,
GH

I don't use EL34s but since they were mentioned above - Upscale Audio has Siemens NOS ELs for $55 per tube - including matching - might want to take a look

Thanks, Facten -
Yup, been checking out Kevin Deal's site a good bit lately. Saw the Siemens there. A little unsure about their fit in my system based on the customer mini-review at the bottom of the page.

I don't see that anyone has suggested current production tubes for you. The joy of tube rolling is that for less than $100 a quad you can have some very distinct differances. I tried Groove Tubes EL34M, supposedly a Mullard clone. They're OK, but not great. I found great satisfaction with the Electro Harmonix EL34EH which cost, if memory serves, something like $8 - 10 each in a matched quad. I quit looking for better after that. They were great in the areas you're looking form. YMMV, of course.

Joe - Thanks for the input. Albert did mention SED Winged Cs as the best of current production EL34s. I'd also seen many positive comments on these. I do appreciate your input on the EH and the GT Mullard clone in particular. The concept behind the GT xf2 Mullard sounds like a winner (but I'm gathering execution falls short?). With the possible exception of the Siemens, I probably won't go NOS. Still bouncing around mainly between Winged C, Mullard re-issue, and Gold Lion KT77.