The GN 8210 amplifier uses Digital Signal Processor (DSP) technology to provide a flexible, customisable amplifier that gives the best sound quality with protection against acoustic exposure & shock. It reduces incoming background noise by digitally enhancing the incoming signal & filtering out the incoming background noise from environments such as traffic, the outdoors or large, open offices. This ensures that the user experiences crystal clear communication at all times. NB: Headset not included.