The Andrea NC181VMUSB high fidelity monaural USB computer headset with noise canceling microphone and volume/mute controls. Andrea electronics has combined the benefits of PureAudio USB digital audio which includes Andrea’s complete PureAudio voice solutions software suite (including audio commander, voice center, and pure audio technology) with our noise canceling PC headsets delivering a high fidelity audio experience with the highest voice recognition industry rating. Andrea’s PureAudio USB solution bypasses your desktop or laptop computer’s integrated sound system, providing increased intelligibility and performance of microphone input and speaker output for all of your digital audio applications including VOIP and speech recognition programs.