IMHO, it takes a pretty good system to hear a difference in cables. Perhaps, it is more evident to someone who has invested in JC-1s, and made his Polks a labor of love. That said, in my youth I was able to discern 1dB differences easily, and was involved in album mix-downs. Today tinnitus, and age cause a distressing inability to tell the difference in many sound qualities, so I have not spent vast sums to acquire great amps and cables. More power to anyone who can hear the subtle differences. Enjoy it while you can.