The Point Source Audio BBX-SH backup box gives you redundancy for your high-end microphones. This backup box lets you connect two microphones to a single wireless transmitter, providing an affordable backup solution. You'll have peace of mind knowing a spare mic is standing by in case of any unforeseen issues. The BBX-SH backup box gives you improved reliability for your microphone setup with minimal additional cost. Terminated with a 3-pin Lemo-style connector, it works with Point Source Audio's premium dual and single element microphones.