Preamp under $2,000 used

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.

Classe could be a good choice. Because of their state of restructuring, the prices of their goods have dropped. CP800 is going for around the $2000.00 mark. A great deal. I sold a CP500 for the crazy price of $1200.00 Joe

Audio Research LS5 mkii

fully balanced
magical sounding

keep their value for a reason