This will speak to my ignorance :b and I'm probably missuing the word "audiophile" but I'm curious as to how so-called audiophile recordings that use more than two speakers use the rear speaker to impart information like rear-wall reflections and the room ambience and such. I'm confused as to the methodology of recording, I think. Does the engineer put another microphone near the right wall and then that track plays from the right rear speaker? But that would also capture sound from the front also, right? This method can't be done if only two mics are used, such as when an audiophile recording uses mics placed like human ears are, or am I just missing it? Any help from those infinitely more educated and informed than me are greatly appreciated!