There are several 1990's or early 2000's Classe preamps that you can get used, in those price ranges, assuming you don't need a phono stage (I can't tell for sure whether or not you do based on a quick look at your component list). It may be possible to find one in that price range that has a phono stage, as well. Do a search for "Classe" at Audiogon under solid state preamps, and you'll probably find several available. They are reputed (rightfully, imo) to have a tubelike sound while having the advantages of being solid state. Their service and customer support is also reputed to be top notch.
Regards,
-- Al
Regards,
-- Al