I still have to put Marty's selected Telefunkens in the VTL pre-amp.
I am planning to get Mullard EL34s from Brent Jesse.
The very nice audiophile in Costa Mesa from whom I am buying the JA100s has a lot of experience with Jadis and a lot of experience with tube rolling. Unfortunately he is not into forum life.
ok, maybe you will first try the Mullard in the preamp with your current power amp, know the difference, then try both in the Jadis. Ideally you need another pair of both to roll in both pre and power