I honestly would like to see some direct proof of this claim though. It doesn’t matter in the sense that cables can be a problem. But everything I’ve seen has shown that even the cheapest cables are often a perfect conductor within the audioband. In fact I helped conduct a test of a bunch of cables and the best performing was the 99 cent molded rca that comes with a lot of equipment. The same was true or the digital and usb cables. Now I broke that cable disconnecting it which is precisely why I don’t use such cables, but not because I think better cables conduct better. It’s a durability issue. Even when people talk about joe cables can cause distortion, oscillation, or phase shifts, that’s true of exotic cables. The cheap run of the mill stuff doesn’t do that. There are certainly little things that arise here or there around cables making a measurable difference but those problems and the solutions are cheap. In measuring distortion on the THX AAA based Benchmark amplifier, John Atkinson has measured higher levels of distortion than were correct due to the cable. The fix was a speakon connector based speaker wire that anyone can buy for quite cheap. The problem wasn’t the wire or geometry, it was the connector. I found the same thing with an older exotic cable I had. It measured very poorly and I couldn’t figure out why. I cut the ends off and re-terminates them and the problem went away. I like making cables, I like audio jewelry as much as anyone, and I have no ill-will towards people who buy and use high dollar cables, but I don’t believe we have objective evidence to suggest that cables can make an audible difference or that any measured differences are meaningfully in the audio range.