Can someone please provide an explanation (a link to website would be fine) on how we hear height with earphones. Just normal stereo recordings. I've read that the outer ear/inner ear has a role to play in terms of reflections etc. but with IEMs that interplay is removed, right? I keep seeing 3D soundstage being used when describing the sound from IEMs and I'm sorry but I just can't fathom how that works. Left and right along with imaging and distance I can see how we'd perceive these elements but height just doesn't make sense. Be as technical as you like, I'll pick up.