turkey, I have to say that what you are engaging in here is telling people that they aren't hearing what they're hearing. It's like telling me after I have run my car into a tree that I actually didn't because the breaks in the model car I was driving were designed to stop that car 30m before the tree. The bark is off the tree and the front of my car is bashed in but there can't be anyway I hit that tree. 
I'm saying there is no proof that what you think you're hearing is actually what you're hearing.
If you ran your car into a tree there would be plenty of physical evidence that it happened.
Here's an example. I was once at this guy's house listening to his system. He had some rather goofy, but very expensive equipment, and he is very, very passionate about the products he sells. (He's a dealer.)
He was using these giant home-built speakers that were way too big for the room and just didn't sound very good. I mentioned that I thought the speakers sounded pretty harsh and over-bearing. He immediately said something like, "I know what it is! I can fix it!" So he went to these battery-powered power cords that he had, ones like firehoses, and he unplugged the power supply from one and said, "There! Listen now!"
He was very persuasive, and for a minute there I thought I heard the treble become tamed. But then I listened again and it sounded the same as it did before.
So I know that my hearing is fallible. I can hear things that are not there. Everyone is like that. Our minds often control what we hear. Without an objective, repeatable test, we simply can't trust our ears. There are too many other factors that might cause us to hear one thing as better than another when it isn't.
In addition, once you start doing real tests, you discover that much of what is "common knowledge" amongst audiophiles is simply not true.
I've done some tests that have opened my eyes. I had some friends come over and we listened to amps while my wife switched cables. We had matched levels and marked them on the preamp on masking tape. There was an Audio by Van Alstine amp, a Threshold amp, and a C-J amp. We found that we couldn't reliably tell the difference between the two SS amps. With the tube amp it was still unreliable, but we did a bit better.
We also did the same thing with a Threshold amp/preamp combo, AVA amp/preamp combo, and a Pioneer receiver. Once again, we couldn't reliably tell the difference.
Over the years I have done the same kinds of tests with wire, and had the same results.
There certainly is some equipment or wire where you can tell when it's in use. It does sound different. But I tend to think that isn't a good thing.
What I suspect is that, at this point, the designs and materials used in electronics can reliably produce equipment that is good enough in performance that it is not the limiting factor. You can build equipment that is better than needed, but you won't be able to hear the difference.
Speakers, recordings, and listening rooms are a different story. These are where the real differences are.
