Which used preamp for Halo A21, under $1,000?


Right now, I have an Anthem TLP-1 pre mated to a new Parasound A21. The combo sounds good, but I suspect that the Anthem may be the limiting factor to achieving "great." Suggestions?

Preamp: Anthem TLP-1
Amp: Parasound Halo A21
Disc player: Oppo BDP-105
Turntable: Beogram 8002
Speakers: Alon II
dbxdx5
Dbxdx5,
My Dodd has a remote.
Also the wooden front face plate. Different from what the site currently
shows. See it in my rack in my two channel system posted here on the
AudiogoN.
used MUSE MODEL 3 is champion at your budget, but hard to find. if you have patience, you can catch it on ebay or here.
I used this YS audio tube preamp with my Parasound a21 and it softened up the sound just beautifully. images just float in the air. Very clean sounding preamp. You will need to change the stock tubes out.
http://www.ys-audio.com/sp+.htm
Parasound just released a new pre amp, the P5. If anything would sound good with a Parasound amp, you'd think a Parasound pre would.