andyjm said:
I felt pretty good, I could clearly identify all of the problems they described, and clearly hear how later versions had solved the problems, and identify the new issues that later designs introduced.
Except they had only played one speaker.
A good lesson, but doesn't really prove that cables can't make a difference. What you experienced is the differences you can hear when someone tells you the difference you are going to hear - the power of suggestion. I don't like telling people the differences they're going to hear, partly because they might not hear it, and partly because I'm then programming them to hear it. I'd prefer an individual hear whatever difference is apparent for themselves. Although you can advise people on how to listen...