I am sceptical of many things. How can that possibly make an audible difference? I’ve had to eat my words (or really, my thoughts) a few times.
The biggest was system supports. Had sorbothane and Vibrapods. Couldn’t really tell the difference. Four years ago, upgraded to Black Ravioli Pads. I was won over. Even better moving from Black Ravioli Pads to their Big Pads.
Same thing with the change in speaker stands to Sound Anchors. Scepticism has now been packed away, as the improvement is very noticeable.
Likely I will hear an improvement with the Stack Audio Auva as well.