Fostex MC10 ST, Stereo Mic-Set with 2 Back Electret Condenser Microphones (Polar Pattern : Cardiod ), incl. shockmount and rail for stereo recordings, windscreen and plastic case, Specifications Microphones : Polar Pattern Cardioid, Frequency Response : 40 Hz - 20 kHz, Sensitivity : -40dbV/pa (10mv/pa), Rated Impendance : 200 Ohms, Equivalent Nose Level : 22 dB, max. S.P.L. : 134 dB, Dynamic Range : 112 dB, 48V Phantompower required, Dimensions (1 Mic) : 20mm diameter x 150 mm, Net Wight : 130g (1 Mic)