Two XLR inputs and one XLR output. Combines mic signals. Also permits phantom power for both microphones if available from the console.
Add an additional microphone to a (or other powered monitor) when all inputs are in use. Permits phantom power to go to both microphones if available from the console.
The JIB/C is designed for those situations when you need one extra channel to plug a microphone into your mixer. Simply plug a microphone (wired or wireless) into each input and connect the output of the JIB/C to the input of your mixer. Another great feature of the JIB/C is that it will also allow the phantom power (supplied from the mixing console) to go to both microphones.
Keep in mind, there is a 10dB loss to summing. It would be best to sum microphones in the same sound field such as combining two microphones suspended over a choir.