Disappearing Act refers to the speakers. It is the listener's inability to localize the speakers when music is being played. Usually humans should be able to figure out exact location of the sound source for frequencies above 120 Hz or so. Certain speakers have to ability to recreate the sound stage without drawing attention to itself. That is what you refer to as "Disappearing Act," or your inability to localize the speakers.
The Disappearing Act
Nope, I am not talking about some magic trick!
I often read here and other forums, when someone describing sound of their system….the music flows and speakers simply disappears. Also read similar acclamation for an amp, preamp or DAC.
Would you agree when someone experience this phenomenon, you’re left with nothing but the music in its purest form. I would say, it’s a testament to the synergy of your components, room acoustics and meticulous setup.
I would like to know, were you listening to something particularly special when ‘disappearing act’ happens, or is it a consistent experience across the tracks?