Plantronics M22 Vista Amplifier w/ ClearLine Audio [43596-64]
by volha butkouskaya
Date Added: Wednesday November 21, 2007
I absolutely love this product. Sound is clear and as loud as you want it to be. Mute button is soundless and works perfect. Two settings of incoming and outgoing volume of the sound do the job right. will recommend it to anybody who has to be on the phone long hours.