Jadis Orch pretubes 12AX7A, upgrade advice...


Know absoluetly nothing about tubes. Would changing out the 2 little pre tubes on my Jadis Orch Reference make a slight change in sound...for the better of course. Need more dynamic's in the highs, if I can get a slight increase, I'd be happy to spend $100 on a pr. I guess everyone is going to have their favorites, so may have to buy 2 prs from the best pics, compare the 2, and sell off the other pr.
Does not give a name on the Jadis tube, just says 12AX7A.
bartokfan
Tesla E83CC frame grid, box plate tubes are very nice. Beware of fakes, but JAC music website has useful info on spotting them.

I had bad luck with the Psvane 12AX7TII tubes…sloppy manufacturing (bad labeling overspray) and a fail…after trying NOS Phillips (another fail…weirdly) and various other recommended brands (the overflow of 12Ax7s wind generally up in one of my guitar amps) I went with new Russian (there are "official" Chinese GL versions I haven't tried) Gold Lion matched and balanced 12AX7s and they sound great. Bought 'em from "thetubestore" who honored the warranty on the Phillips. I like those guys.
I really love the Psvane Premium grade 12AX7 even over the Siemens NOS that were mentioned earlier at a cost of around 75.00 matched pair. 
Hello!
The better 12AX7A you can get in the world for your Jadis it's the SIEMENS E83CC (European name)... I have my DPL and my DA-8 fully tubed with SIEMENS!!... It's another league respect to the actual tubes...
Greetings,
JM
Question was answered by a kind member in an email.
minimial....as i guessed.....carry on fellow Agonners...