Each switch input can be programmed for either push-on/off, momentary on, or momentary off operation. In the off position, the MB interfaces provide 70 dB attenuation at the microphone output ensuring absolute quiet even when multiple microphones are in use. This interface for four mics reduces the size and cost of the microphone system and reduces installation time.
The MB-100 provides programmable switching to turn the mic on or off if desired (switches not provided). The MB-200 interface also has remote switch sensing via an optical coupler. Two microphones can be wired to each pluggable terminal block, which plugs into the MB-100 or MB-200 interface. Pluggable terminal blocks are also provided for the balanced outputs on the interface, and for remote switch sensing. The interface is powered by 18 to 48V phantom power from a mixer or a phantom power supply.