Product Detail Output impedance is 150 ohms, balanced Type: Phase Coherent Cardioid Element: Electret condenser Frequency response (typical): 50 Hz to 18,000 Hz at 30 degrees incidence to surface Polar pattern: Half-supercardioid (supercardioid in the hemisphere above the primary boundary) . The "Crown PCC160" is best product for you. We recommended Crown PCC160