Phone Amplifier with Handset/Headset for Clarity MODEL UA-50

In stock

Amplify your business phone or headset for loud, clear office calls.

  • The only universal amplifier that works with both handset and headset.
  • Increases incoming voice up to 45+dB without static or distortion.
  • Compatible with virtually all modular corded phones and external headsets .
  • Digital Sound Processing and Tone Enhancement for speech clarity.
  • Automatic Gain Control optimizes volume level.

  • Amplifies incoming voice up to 45+dB, so you hear every word with unmatched clarity.
  • Selectable Digital Tone Enhancement enriches the speech frequencies you can’t hear well, making difficult-to-hear words intelligible.
  • Automatic Gain Control optimizes sound level for superior listening comfort.
  • Convenient headset/handset selection button lets you easily switch between modes.
  • Latest Digital Sound Processing (DSP) technology eliminates most unwanted distortion, echo effects, and static commonly found in ordinary amplifiers.
  • Works with virtually all business telephone systems and headsets, connecting between the handset/headset and base.
  • Matching headset, Model UA-50HS, available as accessory.
  • AC adapter included; backup battery (9V) sold separately.


Q: Can I use a headset with 2 2.5mm plugs?
A: Yes, you can; but, you need a connector adapter that is available from Serene Innovations.

Q: Can I amplify the handset and headset simultaneously?
A: No you can't. The UA-50 can only amplify either the handset or headset at any given time.

Q: What type of battery is used?
A: The UA-50 uses a commonly available 9V alkaline battery as power back-up. The battery is not needed as long as there is power to the ac adapter.

Q: What will happen if I don't have battery back-up during a power outage?
A: UA-50 will not work. In case of emergency, you can set the "compatibility" switch to position 7 to bypass UA-50 so you can hear the un-amplified sound.


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