The completely digital GN 8210 amplifier utilizes state-of-the-art, Digital Signal Processor (DSP) technology throughout to provide a flexible, customizable amplifier that gives the best sound quality with the highest degrees of protection against acoustic exposure and shock. The GN 8210 dramatically reduces incoming background noise by digitally enhancing the incoming signal and filtering out the incoming background noise. Its incoming volume adjustment feature automatically keeps the volume of all incoming calls at the same user-set level, and the adjustable audio/protection modes let the user tailor the GN 8210 to individual environments and preferences.