while waiting on a preamp for my DEFY 7/6550's

can anyone put me in touch with a dealer for the high quality czech KT90 tubes? Gabriel wants an 'arm and a leg" price.

Interesting. No wonder I do not see any EI KT90's for sale. The Ei KT90's in the JOR do well with orch and any other music for that matter. I'm still hoping Pierre has some laying around. I see the EL34's tube is shaped like the KT90 and as you suggest this may be my best option, my only option. I hope the local tech guy here in BR can bias it to the EL34's. I'd hate to ship the 135 lb amp. The 6550's made the JOR sound like "most other" tube amps. A sound I could not live with. I doubt if any bias would make substansive improvement. I hate anything "warm and fluffy" in a tube amp.

Yes I see Svetlana EL34's new. This is the tube I will order.

well maybe the JOR is not biased to the 6550 and thats why it sounded off. Hopefully as you say the 6550 can "pull off" big orchestra as I like it. The KT90's are a tad hard edged. But I like bass/mids/highs separation that the 90 offers. . The pre arrives in 2 weeks. I'm not sure how I can tell what component is doing what. IOW if there is something i don't like with the image, how can i tell if the issue is more with the pre or the 6550's in the Defy....I'll have my friend who knows his stuff come over and give a critque. Hopefully all will go well....

Joe, I'm looking into the Telsa EL34's, the ones you suggested to me last yr for my JOR. Correct I did not bias the JOR to the 6550's. I just simply took 4 of the 6550's out the Defy and pluged them into the JOR to get a idea of what i'm in for.
"most unlike tube sound...flat and dead sounding" Pretty much what comes across with the 6550's in the JOR. Not sure if I should listen to newbee or your suggestion to try the EL34's. The only reason I bought the Defy is to have what the JOR delivers but with more power. I was not aware that I would have trouble finding the Ei KT90's if I wanted to roll tubes.

Interesting comments. Seems I've read similiar comments on differences in Jadis' models....anyway I could also make comments on at least one other famous tube amp manufacturer, american. That I have issues with the sound. So I'm not going to knock Jadis, based on experience of other tube amps.
The KT90 can be a tad 'steely' as i mentioned. But it does have nice separation of bass, mids, highs. Highs roll a tad, but hey its a small trade off for its other qualities. So seems my first Jadis purchase was a good one, JOR/KT90's. Now the JOR with other tubes might be exactly what others need for their style of music. I'm just saying what works for me. Though i am willing to give the stock 6550's in the Defy a chance. btw the 6550's are what Jadis stocks, the Svetlana/russian /SV6550C tube. The tubes look awesome. Obviously I was wrong in "testing out" the 6550's in the JOR w/o proper biasing. Jadis biased the Defy 7 for the 6550's at their lab. So I'm in for game. btw the pre is the Ming da 2A3 which I will let Ken here in BR set up on his system first as he has multiple pres to compare with. This way when we hook up the pre he can tell me whats going on with what. If there is an issue he'll know how to track down some adjustments/roll tubes. Like Joe just mentioned, how much is it really worth to us. I'm trying to make this my "last amp". Also note: IF the JOR came with the 6550's and the amp sounded like this on orch, I'd sell it immediately. I mean its bad, as in poor, not "bad" as in street lingo.

Posb My friend here in BR has the Ning da 7 pre that he is modifying , p;us a Redrose Levinson pre. I want him to test my Ming Da when ever it arrives. Be prepared to wait, I ordered mine 1 month ago, still waiting. I think once this pre hits, it'll be take a number, stand it line.
The Sovek 6922's improved over the stock Jadis, and its not like me to start investing in pre tubes. I'm sure there are better, but I'm happy with the JOR. I think I need to re photo my amp for sale, complaints about the dust factor on the amp.
I'll post a review of the Ming based on Ken's comments on his system, uses the Vandy 5's. and on my syatem as well.