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Make yourself heard with the Vista M22 Headset Amplifier from Plantronics. This device goes between your headset and telephone base and increases sound quality and acoustic protection while providing compatibility with telephones that do not allow direct connection of headsets.
The Vista M22 is compatible with traditional or wideband VoIP systems as well as traditional PBX systems. It protects users from volume spikes, reduces the echoes often associated with VoIP telephony, and also reduces background noise. Users can equalize volume over all their calls, regardless of the quality of the incoming call.
A Quick Disconnect port is built in to the 10' cord, allowing you to walk away from your phone without removing your headset or dropping the call. The Vista M22 runs on a pair of AA batteries, which are included.