Comment by auxym

Here's a frequency response test pitting a coathanger against premium audio cable:

https://www.soundguys.com/cable-myths-reviving-the-coathange...

Spoiler: the difference between the coathanger and the premium cable is probably inaudible, and the difference between anything better than a coathanger (ie, literally any sort of copper wire) and the premium cable is certainly inaudible.