quadraphonic system

NOUN
19 LETTERS · STARTS WITH Q

quadraphonic system is a valid 19-letter word worth 40 points in Scrabble and 43 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
Q10U1A1D2R1A1P3H4O1N1I1C3S1Y4S1T1E1M3
10 + 1 + 1 + 2 + 1 + 1 + 3 + 4 + 1 + 1 + 1 + 3 + 0 + 1 + 4 + 1 + 1 + 1 + 3 =40 PTS
DOUBLE WORD → 80TRIPLE WORD → 120
MEANING

What does quadraphonic system mean?

NOUN · 1 SENSE
1

A stereophonic sound recording or reproducing system using four separate channels.