microphonoscope

mi·cro·pho·no·scope

(mī'krō-fō'nō-skōp),
A stethoscope with a diaphragm attachment for magnifying sound.

microphonoscope

(mī″krō-fō′nō-skōp) [Gr. mikros, small, + phone, voice, + skopein, to examine]
Form of binaural stethoscope for magnifying sound.