The Neumann KK 131 is an omni free-field equalised pressure gradient transducer for the Neumann KM A or KM D series.
The Neumann KK 131 offers a flat frequency response up to 20kHz in the free sound field and exhibits a roll-off above 5kHz in the diffuse sound field. The capsule can be mounted on the KM A (analogue) or KM D digital output stage preamps to form a complete microphone.