Apologies for posting a question which clearly only merited derisory replies. I will ask my questions elsewhere in future. A quick look on Amazon would show that there are surround sound headphones and I was just looking for some that were compatible with a Mac.
Well, no need to leave the forum - my sound needs are simple, some 40 y/o EV re-built speakers, BT headphones, and wireless Sennheiser headphones (which I love, as does my wife!) - just looking on Amazon and indeed there are 'surround sound' headphones advertised (first hit shown below) - not sure 'how' they work over the ears (different directions, multiple drivers, delays, etc.)? Also, you need to determine if your computer can put out the 5.1 or 7.1 audio signal - don't know?
Finally, you might want to join a more specific AV forum - I'm a member of
Audioholics but rarely visit - got flamed for my mediocre equipment and also owning 6K CDs that I haven't ripped to NAS -

Bunch of young 'whipper snappers' in their membership, so probably are quite up on the headphones and computer needs you want - good luck. Dave

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