Amazing how some can tell subtle differences between cables.

[Tony_Montana]

Rather arrogant would you say to pass judgment on everyone else, based on your own personal experiences?

Well, members at CA do it all the time

As Mtry mentioned, rapid switching is very effective way to distinguish subtle changes between cables as it will take memory coloration out of picture. I believe rapid switching is even more reliable than DBT testing (I know Mrty will disagree with that) as in DB testing, memory still does play a part.

I guess then that you have experimented little with speaker placement, listening position, or room treatments, as none offer an instantaneous switching capability.

That is true, but most of the time speaker placement effects are not subtle at all and often dramatic. And one can forecasts what type of effect speaker placement will have on the sound so as to pay close attention to it. For example, when you placed traps around your room, you were paying very close attention to bass notes to see if its effects are improvement or not.

But for cables, not only effects are subtle, but one can not participate ahead of time what type of effects it will have on the sound