surround sound 
noun [mass noun]
A system of stereophony involving three or more speakers surrounding the listener so as to give a more realistic effect: [as modifier]: I am about to purchase a spangly new surround sound system for my living room...
- The best gaming PCs come with a complete 5.1 speaker system for true digital surround sound.
- An entertainment system with surround sound can transform this room into a home theater.
- No benchmark could ever provide a definitive evaluation system for surround sound.
- King's English
- King's evidence
- king's evil
- King's highway
- kingship
- kingside
- king-size
- king-sized
- king's knight
- Kingsley, Charles
- kingsnake
- king's pawn
- Kingsport
- king's rook
- king's shilling
- King's Speech
- King, Stephen
- Kingston
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- Kingston upon Thames
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- king tide
- King, William Lyon Mackenzie
- kinhydrone