Need help with Jadis JA200

The first tube (closest to the front)is the 12AU7 and the second is the 12AX7.

Thanks for your help. I have been struggling with trying to figure this out for the last few days as the previous owner does not have the manual either and cannot remember the tubes.
I just got some Telefunken tubes that I would like to try out.
Another quick question, currently the amps are fitted with KT90 Ei tubes which sounds very good to me. However, the tubes are also getting old and have some microphonic noises so I think about replacing that as well. Currently it look liked KT90 Ei is not easy to locate however, I am trying to negotiate for some Gold Aero KT99 which if works out, should be great. However, if that does not happen, the only KT90 readily available is KT90 EH which I heard some good and some not so good thing about. So I am thinking that may be KT88 might be a way to go. What's your opinion on this and if I should go with KT88, any particular brand?
I heard Jadis Defy II with 6550 and much prefer the midrange and treble of JA200 with KT90. I am not sure how much of it is the amp and how much of it is the tubes.
Unfortunately with needing to buy 20 tubes at a time, experimenting on my own is not a very economical way of going about it :(

Thanks for your help.

Depending on the speakers you're driving makes a great deal of difference on the tubes you will like(at least it does for me). I used SED EL34s for years on a Cabasse set up. I loved the rich, liquid, sound. When I bought an old pair of Hales Concept 5s I put in an old set of Sovtec 6550s that I never liked with the Cabasse. The extra punch and leaner midrange(not a bad lean but needed to get more realistic midrange)that the 6550s gave me was needed. I also have a Defy 7 KT90 and it can't compare in any way with the 200s. One other thing to think about is the tubes last for about a year to a year and half. Another reason that I liked the EL34s. They are cheap. Enjoy.

If going with the KT-88:Genelex re-issue or Shuguang 88-98 .The first may be a little more "midrangey" and sound more like the el34 in its'warmth.Have never been a big fan of the 6550 (Tunsols aside).They don't appear to be as "liquid" in the upper-octaves.IMO-YMMV.