The M12 Amplifier connects Plantronics headsets to just about any single or multi-line phone and offers ergonomically designed volume, a choice of headset or handset at the touch of a button, and mute and volume controls. The M12 delivers precise levels of listening and talking comfort, superior protection, and excellent audio performance to your office telephone.

M12 Amplifier Features:

• Receive and transmit volume control
• Headset or Handset selector
• SoundGuard® Plus™
• Call Clarity™