Streamline your call center with the DA80 USB Audio Processor for QD-Equipped Headsets from Plantronics. Designed for easy use with computers as well as Plantronics Quick-Disconnect headphones, this audio controller features a USB connection. The Quick-Disconnect or QD plug allows for easy switching between workstations. Controls allow you to answer or end a call, raise or lower volume, and mute or unmute the microphone. Furhtermore, the DA80 features noise and echo cancellation for clearer calls. In addition to meeting OSHA and Noise at Work regulations, this controller is compatible with Plantronics Manager Pro 3.8 and later, which are available separately. The Plantronics DA80 is compatible with the EncorePro 500 and 700 Series, and Legacy tops.