Mic splitter
Built for BoB 2014 the mic splitter is comprised of 24 channels of mic splitting - you put one mic in and get two copies out of it.
Internals
For each channel, two lengths of cable connects all the pins (i.e, 1 to 1, 2 to 2...).
Usage
Plug the mics into the top connector, and connect the various outputs in the other two. As this is just a passive split, there will be some signal drop - 6db during BoB.