Jadis Orchestra Reference bias adjustment?


I would be very grateful, if someone could explain me (in easy terms),
How to check and adjust the bias setting on my JOR with KT-90 tubes.
maresmares
Thanks a lot. I really appreciate all the help. With the pictures and descriptions, it should be easy now.

ItÂ’s great to get all the support here at Audiogon
It is obvious that Joe (Trelja) has no limits to the generosity of his time and expertise. When I bought his JOR, he compiled an entire color manual of bias instructions for me. We all appreciate your helpfulness, Joe.
Though I must thank Denis for his unbridled kindness, the document I put together when I sold him my JOR was flawed.

It seemed there must have been some confusion in the translation of the biasing instructions into English, and that is what I used to bias the amp. There are 4 potentiometers in the JOR, one for each tube. The instructions I received stated setting one pot of each channel to 110 mV, the other to 0.0 mV. After having this pointed out to me, it was obvious that ALL FOUR tubes should be running at 110 mV.

I'll take full responsibility for the previous errors of my ways. I should have followed up with a confirmation of the instructions with Jadis - France, but I did not. My fault...
Pierre Gabriel, the US /Canada Jadis Distributor must be highly recommended.
Even I live in Asia, he still took the time to speak to me for about an hour on the phone, giving me all kind of information about the JOR and other Jadis amplifiers.
He has great technical inside, and is real fun to talk to. It was a very positive experience, I like to say.
Pierre Gabriel US/Canada Jadis distributor is a true gentleman & very patient in educating/explaining the customer about Jadis products & specifications. I am more than satisfied with his service & experience. Always eager to help & he goes beyond the call of duty.