B&K Tipo 4189-A-021 Micrófono de Campo Libre, Preamplificador Tipo 2671, TIPO 4189
Type 4189 Prepolarized Free-field Microphone. Being prepolarized, the microphone can be used with both DeltaTron and classical preamplifiers. With Type 2671 Preamplifer. This microphone is optimised for use with the protection grid in place.