That said, I am quite angry with audio cable companies for creating 'ladders' of tens of progressively more expensive cables that I believe are designed to squeeze money from perfectionist audiophiles who yearn for that elusive "step up".They are just as likely to be worse. I've heard many demos where the High Priced Spread was clearly wrong for the equipment, yet the salesman prattled extolled the faults as virtues. And it's not a matter of opinion because I recorded the material!
Last thing: I simply don't know why cables do sound different.
It's in the math.
Read http://ielogical.com/Audio/CableSnakeOil.php and the Garen Galeis papers linked there.