"Holographic sound" is the end of a very long journey; it’s not a button on a preamp that reads "Holographic sound".
It’s for certain that you can’t get it when you don’t know what it is, and even then, not every recording delivers "Holographic sound", but if your "system" can deliver holographic sound, you can bet it delivers whatever else is on that recording.
I refer to "system" because I am speaking of an organic whole thing in which the room is a very important component that requires a considerable amount of expertise that may require outside help. Although I’m a retired electronics technician, quite capable of dealing with the equipment, "the room" was outside of my field of expertise. (it’s no wonder no one wants "Holographic sound")
The components required are no less than grade "B" as ranked by Stereophile; sorry "mid fi" will just not make the grade.
I refer to "Holographic sound" as a long journey, because you have to know "intimately" what each and every component in your rig is contributing to the whole; that requires a considerable amount of audio education and study, not to mention days of "critical" listening, which means not listening to the music, but focusing on frequency response, or transparency.
After you have acquired the necessary components, and gone over everything twice, it’s still not quite there; it’s "lopsided".
Back to the drawing board; "Why does the left channel sound louder than the right channel ?"
The answer to that question can take months to discover, and after the answer is found, the solution to the problem can take even longer to solve; no wonder there are so many who don’t want "Holographic sound".