The Neumann KK 133 diffuse field omnidirectional capsule is designed for use with the modular output stages of the Neumann KM D and KM A series. The capsule's pressure transducer features high-frequency boost in free field combined with increasing directivity. The titanium capsule offers flat frequency response up to 12kHz in the diffuse sound field.

The KK... capsule heads are part of the variable miniature microphone system. In combination with the KM D (nx) or KM A (nx) output stages, the KK... capsule heads form a complete microphone. KK 184 (nx) + KM D (nx) = KM 184 D (nx) or KK 184 (nx) + KM A (nx) = KM 184 A (nx).

The KK 133 is a diffuse field equalised pressure transducer with high-frequency emphasis in free field (4-5 dB at 12 kHz). The detachable sound diffraction sphere provides a very smooth high-frequency boost, combined with increasing directivity. The frequency response in the diffuse sound field is flat up to 12 kHz. The capsule is manufactured from titanium.