The Power Chord mains cable (like so many of our cables) came into being just after the Signature speaker cable. This was our first shielded speaker cable and it taught us so much about the use of and performance improvements that a high frequency effective shield could bring.
Try a Power Chord on your source component but be prepared to experiment. If you start with just one you should try it on all the equipment you have. You may find the biggest result comes from connecting your amplifier first. It will be easy to hear where it works best, and it will be easy to add more Power Chords as well.