Plantronics VistaPlus DM15 Digital Amplifier

Plantronics VistaPlus DM15 digital adapter uses digital signal processing technology to deliver unsurpassed levels of acoustic protection and exceptional sound quality. With SoundGuard Gigital, daily personal noise exposure is monitored and automatically controlled to aid compliance with new EU legislation. SoundGuard Digital also identifies and eliminates sudden loud sounds, to avoid user discomfort. It's automatic volume leveler maintains a constant listening volume, regardless of incoming call loudness.