Amplifier or Adapter with mute function Date updated 2013-04-02 Comments 0 Rating Categories Jabra Amplifer/adapters Tags mute, amplifier Which amplifier (telephone adapter) have mute functions? For Jabra headsets the GN850 (newer) and GN8210 have mute controls.For Plantronics headset the M22 has mute controls.Below is a video demonstration of the new Jabra 850 Adapter:
