consonance cyber 800

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.

I am using tesla 6922 and enjoying . also liked amperex bugle boy. pity I dont have any orange lable :) would like to find out more about the power tubes that I cant use ... not all seem to be compatible with the 800.

I just got some NOS Siemans EL34s......will report later about their sonic character and synergy with Cybers.
The source of these tubes, did some comparison for me and said that they are about 80% performance of famous Mullards.
Amperex 6922s Bugle Boys sounded also very good with Cybers.
I no longer have any use for 5687, they were by-passed with custom board - retrofit and optimized by Bob Beckart, the man behind the mods. Expensive but well worth it.
Every amp that I am auditioning right now faild to surpass Cyber's speed, transparency and dynamics.........the last one was from very well know American Company that costs 10K.
It was simply crushed to pieces.
If you live in NY area and what to compare stock Cyber to modded version, let me know.

Mariusz