Audioquest makes some good preamp/amp jumpers for $25 each.
http://www.needledoctor.com/Audioquest-Preamp-Jumper-Cables

What are you expecting to gain from this purchase? Are you unhappy with the sound you have right now?

Well, my hopes of upgrading my NAD 320BEE to something better (perhaps the C372 or even an integrated tube) is no longer a real option ($$ issues). I have a pair of TaraLabs jumper cables connecting the preamp to the amp section of the 320BEE. I was hoping to upgrade those in the hope of squeezing any more clarity, soundstage, etc. out of my current system with minimal cost.