Crossword solverSynonyms for acoustic device9 crossword answers for “acoustic device” (8,6), sorted by letter count.How many letters?All942617181911034 letters 2Bellmute6 letters 1device7 letters 1muffler8 letters 1birdcall9 letters 1megaphone10 letters 3mouthpiecehearing aid(7,3)ear trumpet(3,7)