Plantronics M22 Vista Amplifier Audio Processor (Poly 43596-64 or 43596-40 or HP 85T20AA) **Discontinued and relaced by Poly MDA524**

Ideal for professionals particularly VoIP users the Plantronics M22 Vista amplifier delivers precise levels of listening comfort, sophisticated hearing protection, and superior audio performance. The Vista M22 includes Clearline audio to improve call quality in any environment, especially wideband VoIP. The amplifier includes near-universal compatibility with single and multi-line telephones, as well as ergonomically designed volume, headset/handset and mute controls. The Quick Disconnect feature between the amplifier and headset lets you move away from your phone without removing your headset or disconnecting the call. The Plantronics M22 Vista amplifier comes complete with a lightweight 10-foot coil cord for freedom of movement at your desk.

Plantronics M22 amplifier brings superior sound-quality and acoustic protection to your telephone. As well as providing compatibility with those telephones that do not allow direct connection of headsets it offers a range of additional features to enhance the sound quality of your phone conversations.

Plantronics SoundGuard Plus™ technology ensures loud tones are quickly reduced to more comfortable levels and ensures that the normal, human voice remains natural and unchanged, for face-to-face clarity of communication.

Plantronics Call Clarity™ technology uses electronic signal processing to reduce phone noise and maintain constant volume levels, as set by the user. This ensures all conversations are held at a comfortable and consistent level, regardless of the loudness of the incoming cal