Cardioid Condenser Microphone.Operating Principle: CondenserPolar Pattern: CardioidFrequency Response: 80Hz to 20KHzSensitivity:-28dBV (18mV) @ 1 PaImpedance:480 ohms Max SPL:120dB, 1% THD Self Noise: 26dBAPower Requirements:P12,P24,P48, 5mAAcoustic Instrument, Strings, Cymbals/Overheads, Hi-hat.