The Icicle is Blue's stylish USB converter and mic preamp combo that allows you to connect any XLR microphone directly into your computer via USB! The Icicle features a studio quality microphone preamp, 48V phantom power, fully balanced low noise front end, analog gain control, and driverless operation. Setup is a snap! The Icicle works with both dynamic and condenser microphones, providing high quality and hassle-free connectivity with Mac or PC. Whether you're using a microphone for digital recording, podcasting, voice messaging, or voice recognition applications, the Icicle is the quick and easy way to get connected. Plug and Record - No Special Drivers Required; Built-in Studio Quality USB Microphone Preamp; Supplies 48V Phantom Power for Condenser Mics; Fully Balanced Low Noise Analog Front End; Analog Level Control; Phantom Power Active Light; Includes 6-ft USB Cable. REQUIRES Macintosh: Mac OSX; USB 1.0 or 2.0; 64MB RAM (min) OR Windows: XP Home Edition, XP Professional, Vista; USB 1.0 or 2.0; 64MB RAM (min).