Ladies and gentleman, boys and girls; a "holographic image" is what "everyone" in high end audio is striving for; it's not a separate entity, but what "automatically" occurs when you have it altogether, but not before.
it only occurs when you have top notch high end equipment. I'll give you an example of this; me and the fellows; me being the resident customer, and they being the salesmen, were grooving mightily to Santana "Abraxas", on a lineup of top of the line ARC electronics, that even included the CD player, plus, the best Thiel speakers, when a real customer came in and requested to audition a Rotel amplifier.
Before that occurred, I was focusing on the organ; it was isolated like I've never heard it before or since; this was on the cut "Incident at Neshabur";
https://www.youtube.com/watch?v=s-s2uFgMRjA
Can you dig it?
We were all seated in the small auditioning theater just grooving; that's when not a word is spoken, and each person is off in his own private inner sanctum; that holographic image with the individual instruments right in front of you will do it; put you out there where you want to be.
"And then the doorbell rang"; it was a customer who wanted to audition a Rotel Amp; when his request was honored, the soundstage collapsed. Nothing else had changed, but no more holographic soundstage; a chain is no stronger than it's weakest link.
That sums up a "holographic soundstage".