The David Clark Amplified Dynamic Microphone is a noise canceling type design to operate in place of carbon and amplified microphones. This microphone will not operate in circuits that do not supply a DC bias voltage. Most modern aviation communication equipment do supply this required voltage. This microphone features a screwdriver adjustable gain control to accommodate the range of sensitivities found in many radios.

Fits: H10-30/H10-36/H3335 David Clark Headsets