Compatible with any SQ digital mixer or dLive system equipped with an optional gigaACE I/O card, the Allen & Heath DX Hub is a remote audio network hub, providing four DX Link ports, each with 32x32 I/O 96 kHz audio. It allows you to connect one DX32 expander or up to two DX168 / DX164-W expander units to each of the DX Link ports and add up to 128 remote inputs and 64 remote outputs to your system. With dLive, multiple DX Hub modules can be used for further expansion or for dual redundancy..PZA MORE SPECS