Audiophiles with a high-end audio system eventually recognize that cables make a difference in the sound quality (SQ) of their system. Interconnects, speaker cables, power cords, USB cables and so on. Sometimes the SQ is just different, sometimes ‘better’, sometimes ‘worse’ as compared to the cables they already have.
Controversial as it is, it is what it is. For me the time came about six years ago when I experimented with power cables that clearly made a positive difference in my ever evolving system, particularly amplifiers. That the soundstage grew in all three dimensions and the bass benefited were the most obvious improvements. As a scientist and skeptical as I should be, I was baffled; but I accepted what I heard with my own ears and moved on—keeping the new cables and enjoying the sound.