• Dual Connectivity : Offering multiple interfaces in a single product. This feature allows the use of one product in a room that requires multiple connectivity options (audio and video conferencing).
  • Bridging : The ability to connect two calls from different interfaces simultaneously, making your video conferencing participants able to speak with your audio conferencing participants as well as yourself through your device.
  • USB Power : The ability to provide power to the device through the USB connection getting rid of the need to use a separate power supply.
  • Tough Construction : The MT202 Duet EXE is made primarily with strong high quality metal parts designed to hold up to the rugged life of being on the move.



  • USB
  • Analog – 2.5 mm and 3.5 mm connection


  • USB to your computer – this connection is for any session using your computer, such as Voice Over IP applications (Skype, Vidyo, etc.).
  • 2.5mm cable to your smart phone – this connection is for any session using a smart phone or tablet.


  • Speech processing and echo suppression at 32KHz sampling rate
  • HD speaker audio (16KHz bandwidth)
  • Maintains audio performance of the PC for HiFi audio applications when external speakers are connected.
  • Plugging in a headset will automatically turn off the speakerphone.

Controls On The Device:

  • Speaker Volume
  • Mute


  • USB power for PC and Laptop (LED will illuminate)
  • External power supply included for phone only configurations (when Duet is not plugged into the PC)


  • 100% Full duplex performance – no attenuation (either way) during full duplex
  • Acoustic echo cancellation >40 dB
  • High-end performance: conforms to ITU-T G.167 standard
  • Line echo cancellation
  • Noise cancellation >10dB
  • Residual echo is suppressed to the environment noise level to prevent artificial ducking of signal
  • Voice level equalization
  • Convergence speed 40 dB/sec
  • Tail length (200ms)
  • Convergence during full duplex (no recovery time after full duplex)
  • Low delay (10 msec)
  • Bandwidth 20Hz – 16kHz for speech processing maintains the soundcard bandwidth
  • Integrated loudspeaker
  • Omnidirectional microphone pickup pattern 360°. Equal output or sensitivity at all angles.
  • Integrated loudspeaker
  • Mute button and loudspeaker volume control buttons (LED will blink in mute mode)
  • Four position gain setting for optimum adjustment of signal level into the telephone

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