Recommending a tube preamp for Linn amps/speakers


I have an Aktiv Linn system (LK140's, Kairn, Katans and Sizmik, Silver IC's) and would like to try a tubed preamp.
I understand from searching to be sure the preamp output voltage matches that of the amps - given this, could someone recommend a nice preamp in the $2k range ? Phono section nice, but not essential ...
Supratek has been recommended (thanks, Lugnutz!) but man, they are hard to come by !!
Thanks for any advice/counsel.
anubis
Anubis, changing to a tube amp will do the most for sound. I added the Cary SLP98P to an all Linn system, then a Cary CAD 120's amp and it made all the difference in the world. It worked well with the Katans, Ninkas, Majik 140's, and all of the Klipsch speakers that I had.
Anubis

I had a Kairn and 2 Klouts but not active and actually used just one.

I had someone come by to buy a pair of Klipsch Lascala's and he brought a vintage tube amp. Shocking!

Dead quiet tube amp.

The problem is Linn uses dirt cheap parts in the crossovers. I had 5140's.
Almost afterthought parts quality. Maybe to make the jump to acktiv better?

You can try vintage tube pre or integrated on the cheap?

I sold my Kairn phono and and still have the vintage tube amp heavily modded though, but still have Linn sources LP12 and Karik/Numerik.
Check out the Mystere CA11 tube preamp for $1795 new. Awesome unit! I bought one to replace my Primaluna Prologue Three. Very satisfied with value proposition offered by this company. Hard to beat in this price range.