Power cords with bass emphasis

I'm looking for a power cord that has a slightly elevated bass response, but which isn't wooly, for my preamp. Telling you that it's a Jadis DPL tube preamp isn't very helpful, though, as it's been so heavily modified. Let's just say it's a tad bright, extremely detailed and lean.
I listen to a lot of funk. I don't need the bottom octave, so much as a good, strong output from 40-80hz. I'm using a solid state YBA amp (with a Camelot Sir Bors pc hard-wired in) on the woofers of my Martin Logan Sequel IIs and two modified, tubed mono GTA SE-40 amps on the panels. I listen to a lot of vinyl with a Van den Hul Frog on a Well-Tempered table and arm. I use Audience AU-24 and Acoustic Zen cables (Matrix II and Silver) and a Nordost Quattro Fils. They are in a constant state of flux, though. I'm using an Audio Magic Stealth PLC through a Virtual Dynamics Reference for everything, except a PS Audio Ultimate Outlet for the SE-40s. (Please don't tell me to sell the Nordost because it's lean. I like it too darn much.) I can spend between $250-$350. Any suggestions?