Source : Webster's Revised Unabridged Dictionary (1913)

Reproducer \Re`pro*duc"er\, n.
   1. In a phonograph, a device containing a sounding diaphragm
      and the needle or stylus that traverses the moving record,
      for reproducing the sound.

   2. In a manograph, a device for reproducing the engine stroke
      on a reduced scale.

Reproducer \Re`pro*du"cer\ (-d?"s?r), n.
   One who, or that which, reproduces. --Burke.

Source : WordNet®

reproducer
     n : an audio system that can reproduce and amplify signals to
         produce sound