The Collaborative International Dictionary of English v.0.48:

Reproducer \Re`pro*du"cer\ (-d?"s?r), n.
   1. One who, or that which, reproduces. --Burke.
      [1913 Webster]

   2. In a phonograph, a device containing a sounding diaphragm
      and the needle or stylus that traverses the moving record,
      for reproducing the sound.
      [Webster 1913 Suppl.]

   3. In a manograph, a device for reproducing the engine stroke
      on a reduced scale.
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

reproducer
    n 1: an audio system that can reproduce and amplify signals to
         produce sound