No, but I'd be willing to entertain the idea that 50% of all 'audiophiles' really don't know how to listen for differences and identify them. And I'd also be willing to entertain the idea that many audiophile hear stuff because of the power of suggestion. But, frankly, just because you can't hear it, or it doesn't make sense to you doesn't mean its not real.
For example, our newest CLC devise which has been broadly discussed. Don't know/don't care, but FWIW I have a CD transport that when connected to the system thru a DAC and placed in standby (as well as 'on') creates a brightness which is intollerable in a 2nd CDP/DAC which is playing. All are filtered. Brightness only goes away when I disconnect the transport. Some how this transport is dumping something back into the electrical system. I really can't explain it - doesn't make much sense. Is that real? To me it is. Wanna buy a transport? :-)
So, IMHO, to balance those folks who can hear things that make no sense to others because of the power of suggestion, there are just as many who can't hear things because of a pre-disposition that they can't exist lacking a scientific explaination.