This dynamic microphone features a uniform frequency response from 60 to 15kHz. Impedance is 150 ohm (balanced to ground) and high impedance (wired for high unless 150 ohm requested). Impedance selection is made at the cable plug. Its polar pattern is cardioids, uniform front-to-back discrimination. This mic measures 1-7/8" diameter, 7-3/16" length and weighs 1lb. 12oz.