Sophia (blue) EL-34-ST Tubes

[retired farmer]

That one is on my list for dissection. Because they bought most of the 9a base plate dies when Telefunken closed their doors. So the plates are the same, but not the metallurgy, I want to compare and contrast the cathode and the grid winding to a Telefunken.

What shoots the new current tubes for a lot of people is the use of copper in the metallurgy. Which the electromagnetism effect changes how well the harmonics propagate in the tube. Granted some are made for things like guitar amps that most of these side harmonics are intentionally cancelled out, Some EE that are not specialized in audio will tell you any modulated distortion should be cancelled out. But they say other crazy things like there is no difference with resistors or capacitors either.

If you want to try a set of cheap reflecktor 6922 tubes at parts connection Chris Johnson bought out the personal stash of the arc engineer who past away. They are marked sovtec but the structure is the same as the reflecktor 6922s. I have a couple of those sets in a drawer as well. The last I saw them they were very cheap. Like very very cheap.

 

[retired farmer]

Well you were right I didn't give the gold lion 6922s enough break in time
They seems to be changing back and forth. From bright and edgy to ok. Lots of bounce in the music. Better timing than the reflectors. Give them some more time and see what happens. Perhaps put the set of four in the monoblocks instead of the pair in the cd player. I must say I didn't think that they were not broken in enough lol live and learn. Thank you everyone!