best preamp under 4000 to match 4b sst

If you want warmth I suggest a nice tube preamp. Here are two great choices;

Cary SLP98 - Great sounding pre with loads of warmth and body

Conrad Johnson LS16 - keep an eye out for a used one. This one is so warm and wonderful.

I have owned some of the tube pres mentioned here (Lamm and Joule) and I would still recommend the Dodd preamp which is less expensive than the other two to boot. To Tvad's point, the output impedance of the Dodd is very low for a tube preamp - 200 ohms I think and will drive the amp very easily in terms of impedance matching.

The Dodd preamp looks very interesting, im looking on audiogon if i can find one in maple right now. At the right price i might purchase that one. The red wine isabella seems very nice too but cant seem to find a really mint used one. Thanks for all your comments guys im researching all the pre's mentioned and trying to make a good choice here.

I will doubt finding used RWA Isabella .....at least in a very near future.
Dodd seldom shows up for sell and when it does, it sells in few days max.
But, even for its asking price - it's well worth it.
I owned both ( still have the RWA ) and can asure you that you won't be sorry.

Regards
Mariusz