3-Dimensional Soundstage

In mix studio recording acoustical cues for depth are added artificially ...

i have a few DJ music like this...

I listen mostly jazz and classic and i always experienced depth level and soundstage filling the room at some degree accordingly to the recording process ...

If you dont perceive it your system/room is not optimized acoustically... The electrical noise floor level, and lack in vibrations mechanical control, are the causes, maybe the gear synergy also, but the problem most of the times is also a lack of acoustic room control... for sure speakers positions and location play a role but this is evident...The other cause are less evident and very powerful actors in sound perception  degradation...

I do know that my room is not acoustically optimized.  It is asymmetrical and open to a very large space.  I have auditioned a system in a local dealer in a small well treated room and the 2-dimensional aspect was definitely more impressive.  I didn't notice depth in my short demo.  I have not ever listened to quality headphones and all this makes me wonder sometimes how that would sound at a fraction of the cost and space LOL.

The ability to hear depth within a stereo image is one of the truly groovy, addictive aspects of high-end audio. To experience it, though, (1) your system needs to be a pretty good one, (2) your speakers need to be symmetrically placed within your listening room, and (3) you yourself need to be the third point in a symmetrically consistent triangle with the speakers being the other two. The recording itself.needs to have been recorded much the same way...though it might be said that modern electronic trickery can also go a long way in creating the illusion.

Find a copy of Holst The Planets with Sir Adrian Boult conducting The New Philharmonia Orchestra & Chorus (EMI ASD 2301). If your system doesn't reproduce the astonishingly-deep soundstage captured by EMI's engineers, you need a better system. ;-)

The first time I heard the LP I was flabbergasted; the percussion instruments at the back of the orchestra sounded further away than was the wall behind the Magneplanar Tympani loudspeakers. And the percussion section was obviously on a riser; the delicate sound of the triangle floated above the rest of the orchestra. Height information!

With many classical recordings, on my system it sounds as if much of the orchestra is located behind/beyond the wall behind the speakers.  Studio recordings can be engineered in a number of different ways.  All I know is that I have some pop/rock CDs where, for instance, it definitely sounds as if the bass guitar or the drums are well behind the lead singer.