The brain always fills in information and creates illusions that are not real. Close your eyes and listen to vocals, they invariably appear to be dead centre, but there is no speaker there, its an illusion created in your brain, you hear two separate signals one in each ear, your brain processes that and informs you its from the middle, its not is it. Soundstage is the same, some systems give much wider soundstage, more often how they placed is more important.
Soundstage and image height, does it exist?
On another site, there is a discussion on soundstage, and there are a few people clamming, that, since there is no vertical information encoded on stereo recordings, that soundstage height does not actually exist. It is a product of our minds filling in missing information.
Are they correct?
Please explain your position, with as much technical details as you feel needed.