Used Preamp for $2000 to $3000


I am looking for used 2 channel preamp for my stereo system. I am using Pass X600 mono block, Speaker is Von Schweikert VR4 SR for the front, Sony SCD-1 for CD player. Please helps me to find used preamp for $2000 to $3000. Any input is welcome. Thanks a lot and have a nice day.
nguoiyeunhac
What pre-amp are you running now? Anything in particular you are looking for sonically or feature wise?

BAT gear seems to work rather well with Pass amps. My system is a baby version of yours (X150, VR2s) and have recently replaced a Pass X2 pre with a BAT VK3ix pre-amp with excellent results.
I am using Adcom GFP 750 for right now and want to upgrade it.
I like the Adcom, but sometime I feel like missing of something. Well I can't complain for the money I paid for it. Thanks for looking.
There's a couple of Thor T1000 linestage mk2 (upgraded ) for just over 3k. Great piece!
You wont find a better pre than the Thor for $3000 and that is a sure thing. They are amazing and an outright steal for anything near $3000.