I use and would highly recommend the TG Audio SLVR power cord as Bob Crump not only makes the cord, but selected all parts and voiced the final JC-1 prototype before production so you will get great synergy. The benfits of the SLVR are not subtle compared to stock and deliver a much greater immediacy, focus, and overall more dynamic presentation --- will compete with cords far more expensive that their $500. price.
Jim
Jim