Unidirectional- Cardioid Pickup. Wide Frequency Response. 10dB Pad Switch for High SPLs. Low Roll Off Switch to Reduce Popping and Handling Noise. Requires 9 - 52V Phantom PowerPower Supply: 9-52V Phantom Power Frequency Response: 50Hz-17kHz Polar Pattern: Cardioid Sensitivity: -45dB Output Impedance: 200 Ohms Max SPL: 136dB Dimensions: 80 x19mm (Each) Weight: 25g (Each). A pair of miniature cardioid condenser microphones with compact dimensions and ultra-high sensitivity. Applications include recording in stereo- overheads for drums and drop mics for chorus sections.. condenser microphone