Hang on, you are trying to have your cake and eat it too. You are claiming that you are not imagining hearing inaudible things. Show me one properly conducted and controlled listening test, where subjects cannot respond to anything but changes in the sound waves, that shows a high statistical confidence that these infinitesimal changes in the sound waves, that should not be audible without superhuman hearing, are indeed audible.
Your big mistake is to think that your sloppy casual sighted home A/B 'listening' 'tests' are telling you about what is audible in the sound waves. They DO NOT. Your test method is a perfect setup for audio illusions, just as perfect as a David Copperfield 'magic' trick is a visual/cognitive illusion, and your response to your audio 'test' is the equivalent of insisting that Copperfield is actually possessed of supernatural magic powers, that he actually sawed his assistant in half and put her together again, etc.
cheers
I think you've missed my point.
I know for a fact that I have heard "inaudible differences". I didn't consciously make it up. It didn't feel imaginary or vague or anything like that.
Now, I've learnt from both theory and practice that it
can't be that the sound waves can explain the experience.
I don't like the word "claim" for the
experience. The problem is not what our perception (we use the word "ears" wrongly for this) tells us. The problem is faulty reasoning around that perception: "I heard a difference because Amp A is better than Amp B" rather than " I "heard" a difference because I saw the brand name on Amp A - I associate Amp A with a particular sound - so I heard that sound".
Actually, with sighted tests, as you know, it's worse than that, because testing conditions introduce audible changes: so "I heard a difference because Amp A is better than Amp B" rather than "I heard a difference because I had Amp A playing several dB louder", or "I heard a difference because my preferred DAC puts out 6v and overloaded the input of Amp B".
To the person who doesn't have that extra knowledge or can't process it, the visual/cognitive illusion is no different from the reality, and the experience is "real". That's a big gap for people to exploit -you can fill the hole with supernatural powers, religion, or "custom quantum tunnelling". Even better, you can make your victims perform the illusion on themselves. And that is the basis of much in the hifi field, is it not? "Just add an egg".
Oh, and my favourite Copperfield trick is the one where he makes something massive like a jet "disappear" by
putting a big black cloth behind it and turning the lights off. If we're dumb enough to fall for that....