The DiGiCo Purple Box is a CAT5/ MADI to optical convertor, primarily for the transmission of high channel count MADI signals over a long distance. Capable of taking either a MADI or CAT5 connection from an SD or S-Series Console, or a D-Rack or D2-Rack, the Purple Box converts these MADI based signals to an optical format for transmission over fibre. Purple Box allows any combination of two MADI or D-Rack streams to be converted simultaneously.