Poly M22 Vista Amplifier
The Plantronics M22 Vista Amplifier is an inline voice amplifier. This voice amplifier acts as an adapter for Plantronics headsets that use the quick disconnect cord. It is compatible with H-series headsets. The item normalizes sound, amplifies calls, and has mute controls. Individuals who are hard of hearing and require amplification while using the phone, and use an H-series Plantronics headset, may benefit from this device.