Preamp under $2,000 used


I'm looking for good suggestions on a used, less than 10 years old preamp to pair with my Mark Levinson 532h amp and Revel F206 speakers. Currently using an Anthem MRX510. Looking for a little more resolution. 
I've reviewed Levinson, Ayre and Parasound Halo JC as great reviewed preamp. Any suggestions?
lnitm