*** DISCONTINUED - Please see replacement model: Plantronics .Audio DSP 400 Plantronics DSP-400 digitally-enhanced foldable stereo headset with full-range stereo sound. The foldable design allows for easy storage and transport. Listen to your CDs, DVDs, or MP3 files. The noise-canceling microphone enhances speech accuracy. It s packaged with Plantronics PerSono Audio Control Center Software, as well as speech recognition and voice applications. Digital Signal Processor provides full range digital audio Digitally-enhanced, full-range stereo sound PerSono Audio Control Software for easy control of all your audio needs Ultra-sensitive digitally enhanced noise-canceling microphone delivers the full spectrum of the human voice Sleek, stylish design with color accents New lightweight materials for ultimate comfort QuickAdjust microphone boom allows the user to position the microphone easily and consistently for uniform performance and higher accuracy Plantronics has announced a new line of superior quality, digitally-enhanced/USB headsets for the PC and Mac. They represent a complete hardware and software solution for Internet telephony, voice chat, CDs and MP3 music, DVDs, multiplayer games, speech recognition and voice navigation. Plantronics applied its 40 years of experience in light-weight communication equipment to design and manufacture digitally-enhanced headsets incorporating both USB connectivity and digital signal processing (DSP). Available only from Plantronics, these Mac and PC compatible headsets provide three main benefits over their conventional analog cousins: The digital USB interface produces a crisper, cleaner signal. DSP technology enhances and optimizes audio for specific applications. Plantronics' PerSono Audio Control Center Software gives you the ability to launch and control your music, games, speech recognition, and Internet voice applications as well as control the microphone and audio properties from a single user interface. See Plantronics Downloads