iSK - DP DP DP - CM-20C Super Cardioid Condenser Mic Microphone Element: 16 back electret condenser, Polar Pattern: Super-Cardioid Frequency Response: 30Hz-18 kHz Sensitivity: -38dB3dB (0dB=1V/Pa at 1kHz), Output impedance: 10030% (at 1 kHz) Self Noise: 20dB A, S/N Ration: 74dB, Max. Input SPL : 135dB (at 1kHz 1% T.H.D) Power Requirement: 9V-52V Phantom Power