Blue Microphones NESSIE USB Connector USB Microphone - Cardioid Microphone Frequency Response: 20Hz-20KHz Specification: Microphone and Performance: Power Required/Consumption: 5V 150mA Sample Rate: 48 kHz Bit Rate: 16bit Capsules: 1 Blue-proprietary 14mm condenser capsule Polar Patterns: Cardioid Max SPL: 110dB (THD: 0.5% 1kHz) Headphone Amplifier: Impedance:16 ohms Power Output (RMS): 100 mW THD: 0.009% Frequency Response: 15 Hz - 22 kHz Signal to Noise: 100dB Dimensions (in stand, home position): 3.75x 3.75 x 10 Dimensions (max extension): 3.75x 3.75 x 11.25 Weight (microphone in stand): 1.4 lbs (.64 kg) System Requirements: PC: Windows 8, Windows 7, Windows Vista, XP Home Edition or XP Professional USB 1.1/2.0; 64 MB RAM (minimum) Macintosh: Mac OSX ( 10.4.11 or higher ) USB 1.1/2.0 64 MB RAM (minimum)