Preamp under $2,000 used

I have some extra Audio Refinement (YBA) gear. Preamp, matching CD and tuner also. 

4hannons, When I said reviewed I simply meant I've read about, read reviews on those and a few others. I'm not looking to throw another $5-10,000 in my system , it sounds very good with the Anthem as preamp, OPPO Bd105 as music player and aforementioned Levinson 532h amp and Revel speakers. I'm just wanting to get a little more refinement and resolution than the Anthem can provide. 
I've heard tube preamps in a couple other systems, one with Revel F208s, sound very good. Don't know between tubed or solid state which would be the quietest, blackest background and refined articulate sound. I know my amp has very capable refined sound, just think my Anthem is good but holding things back a bit. 

I just purchased a Hegel preamp because I own the Hegel H300 integrated and it sounds fantastic. I am teaming up the Hegel preamp with a pair of Classe ct-m300 monoblocks using xlr with very good results. 

Look at a Krell KAV-280p preamp and then re-cap the power supply.  Make sure to increase the 4x3300uf main power supply capacitors to 4x6800uf.  This makes a huge difference and fixes the typical Krell "cold and bright" sonic signature.  Cost of the preamp is typically $1200-1400.  Cost of capacitor parts is probably $50-60 plus labor.

Modwright SWL 9.0 Anniversary Edition
Modwright LS-100
(Owned an earlier SWL 9.0 and moved up to the LS 36.5)
Strongly recommend the older 9.0 against any ARC used under $2500; can’t speak for the current 9.0 but I’m sure it’s better. Modwright’s have great PRAT - not big colored tube sound but very musical and revealing. I don’t have a Modwright dealer nearby so bought directly from Dan and he gave me a great deal.

Outside your budget but they’re getting closer with the newer unit out. Pass Labs XP-10. Don’t see any used ones currently so might be best to call Mark at Reno HiFi.

No doubt your Levinson and Revel’s are worthy of a very nice preamp. Be nice if you can bump your budget up a little as I think you’ll find out you’re just starting to get to the better units.

Our local Revel / Levinson dealer really likes Rogue Audio in this price range. Used Rogue 99 might be something to look at - I’ve not heard the Rogue’s personally but I should drag one home for the fun of it.
Good luck.