Preamp Upgrage for Nakamichi STASIS Threshold ?

Hello,

I have a Nakamichi PA-7 STASIS amp 200watts (made by Threshold for Nak) with a Nakamichi CA-5 preamp. I'm using Phase PC-500s floor standing speakers.

I'm thinking of upgrading my preamp and wondering what would work well with the PA-7 STASIS amp (w/o costing too much). I'm not interested in puying a tube preamp that has to warm up for 1hr before using it and wondering about buying something that has XLR capability in case I buy a CD player that has XLR outputs.

I'm also wondering about RCA interconnects for between my amp and preamp for a good price; my Interlink Reference A (monster) sound better than other interconnects I've tried including Esoteric Audio TECHNUS and Kimber -- seems like a fat gage wire between the two is neccessary.

Thank you in advance! Love this web site!