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).