This ties in to what Gene said about speaker cables that do sound different any speaker cable that sounds audibly differently is almost certainly causing an anomaly - which means that it's really doing a worse job of carrying the audio signal without altering it - but some manufacturers will 'spin' that as 'proof' that their cable is better.

when, in fact, the new version could simply be different but equal, or even worse instead of better. Then, when they do indeed hear (or think they hear) a minute difference, you proudly proclaim that the difference 'proves' that you have made an improvement. It is a common marketing practice to 'position' the prospective customer to hear an 'improvement' in a new product. Auditioning a certain component and actually hearing a tiny difference is not the same as hearing an improvement. I would also add that, even though different cables do have slightly different electrical properties, and so could actually cause a minute difference in sound, that's not the same as a demonstrable improvement. everyone here should watch it and take the message to heart.

Usb 2 vs usb 3 audio audioholics