The SSL ‘MADI Opti-Coax’ is a handy format converter box designed to convert up to 64 audio channels bi-directionally (64 IN & 64 OUT) between the MADI Optical and MADI Coaxial formats. Its front panel is equipped with one set of MADI SC type optical input & output connectors and one set of MADI BNC coaxial input & output connectors.