Abruce, a good PC on ANY highly-transparent phono stage can make a difference! Just the potential lowering of the noisefloor will yield benefits of increased delicacy of detail, and hence perceived improvement of so-called "microdynamics". If you get a better one using a great dielectric like Teflon then you'll also benefit from less phase "smearing" from dielectric absorption and rebound.
I have found that the industrial Belden 83802 12AWG in all-Teflon in such a cable, and assemble easy DIY Kits comprising this magical cable and great connectors. Best of all, it's only $35. Sorry to plug here. Ernie 781 483-3922