There are only few solutions to transmit audio signals over long distance with little effort. Using MADI offers the unique option to transfer up to 64 channels via a single optical cable (alternatively coaxial cable). In addition to audio, MADI also offers MIDI and RS232 transmission. Important connections can be routed in a redundant way. RME MADI and AES/EBU products offer solutions for all possible setups.
Please study the following examples: