The IB-9012 is a convenient adaptor when connecting the Q-RM9012PS multi-zone paging mic directly to a Q-SS9012PS multi-zone speaker selector switch. All that is needed is two standard CAT5 or better shielded cables terminated with RJ-45 connectors which are available in various lengths. Custom cables can also be used. The adaptor provides one Phoenix-style connector and plug for making a balanced line connection to an amplifier or mixer.