consonance cyber 800

The output tubes in mine are the stock EH 6CA7s fat bottles, if you didn't get them go out of your way to find a set of 8 . These are true beam tetrodes and I love emn. Never thought I would like an Electroharmonix.
The input and driver tubes stock are ptetty darned good but I rolled them to Mullard Mil Spec CV2943s and Tung Sol "Nos" 5687s. So far every time I hear them I sit there in awe. These are the world beater amps I was looking for. Do you like yours?

I also like the stock el34 but would like to try some Mullards next. 6922s were replaced with Amperex orange label -O- plate NOS and Tung-sol 5687 NOS . After Bob Backert mod 5687 is complitly by-passed and not in the chain. It seemed to slow this awesome amps quite a bit.

looking at these for now, high on my list,

it is my understanding from the distributor that the stock philips 5687 is in fact a relabeled tungsol and i am thinking about getting nos tesla(not jj) for the 6922's.
ge 6dj8's have also come up as replacements.