zkzpb8, thank you for referencing that article! I was the author of that article, and let me tell you it was a fascinating experience! I went to the point of putting my subjective impressions to the test literally, even though as a reviewer it would have caused a crisis in many respects had I not been able to distinguish cables, or other components, blindly.
I was willing to put my reputation on the line as a reviewer in order to confirm or disconfirm my opinions. That is but one reason why I hold no esteem for someone who is so self-confident and chintzy that they will not spend a couple hundred dollars or take some time to conduct simple comparisons.
There are two kinds of audiophiles, those who talk and those who build systems. Those who build systems get a lot better at it than those who talk. :)
The surprise regarding amps was confirmed by Richard Van Alstine, who in use of the ABX Comparator obtained the same results; level matched amps were indistinguishable. However, we do not level match when switching between amps, so it's a moot point.
One of my big conclusions after that review is one does not need blind testing to hear differences in cables. If the two cables sound similar, move on, because you will encounter ones that sound quite differently. If you are not able to hear differences at all, then stick with swapping components and speakers.
I expect skeptics to discount my findings, even though I took pains to be precise and forthright. So be it.