Pickup pattern : supercardioid Transducer : pressure gradient dynamic Frequency response : 40Hz-16kHz Sensitivity (free field, no load) : 1.8mV/Pa =/-55dB (odB=1V/Pa) =/-75dB (odB=1V/bar) (USA) Nominal impedance at 1 kHz : 350 ohms Min terminating impedance : 1000 ohms Dimensions : 1-7/8" dia. x 7-1/3"L