The COS-11D has perfect OMNI Directional polar patterns from 20Hz to 20kHz, and very natural sound from 50Hz to 20kHz.The frequency response is consciously adjusted to the human voice. Suitable for a wide range of applications including musical theatre,TV news studio, ENG, TV-movie outdoor shooting and even live opera and pop recording. Available in various models, so that you can immediately use it with your existing wireless transmitter. After changing to the COS-11D from the attached transmitter microphone, you will enjoy a new world of sound. Also COS-11D has the model for normal phantom, wireless transmitters of many manufacturers, AA type battery and/or 12V to 52V phantom, and with no connector drivable from 3V to 10V DC.