gradient microphone

19 LETTERS · STARTS WITH G

gradient microphone is a valid 19-letter word worth 29 points in Scrabble and 34 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

G2R1A1D2I1E1N1T1M3I1C3R1O1P3H4O1N1E1

2 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 3 + 1 + 1 + 3 + 4 + 1 + 1 + 1 =29 PTS

DOUBLE WORD → 58TRIPLE WORD → 87

MEANING

What does gradient microphone mean?