So much of this stuff is really on the edge.
Do we really hear a difference or is it just an expectation?
Bob
Don't know about you Bob but I totally hear it. See my system page for comments about a recent visitor Deborah who heard and described Cable Elevators so clearly. I've done demo's on stuff like this for people so many times over the years I've lost track.
That said, there is one small group who either can't hear or do hear but instead of responding to what they hear obsesses on second-guessing what they heard to the point of borderline neuroticism: audiophiles.
I am not kidding. There's two kinds of audiophiles: ones who hear really, really, amazingly well (and almost always can tell you all about exactly what they're hearing) and those who can't. At all. Usually the second (and much bigger) group is really, really good at rationalizing away why they can't hear what everyone else can.
Spoiler alert: expectation bias is one of their favorite tropes.