@barts ....I remember reading a 'plaint from a gamer that his desktop speakers never gave him the audible 'clue' that he was being snuck up upon....found a pair that did so enough to notice the 'cue' and respond (...in time, perhaps...*L* )
Headphones simply take out your space, replaced with theirs'; the better ones' more convincingly.
As an omni fan, they can pull off the suspension act with less fuss in 2 chan, but adding a pair for an audio 'back wall' creates a larger version,
It's nice. ;)