Steve,
We asked many people about the throughput of Toslink and got universal feedback that it is more than capable of 24/192 provided that the sending and receiving units are capable, which they are in the Macs. This stands to reason since fiber applications are used at much higher bit-rates through fiber in other applications. Since Marty has a Meitner and wanted to use the DAC in his player for a music server, we spent a lot of time with their engineers who validated Toslink as an excellent way to connect to their unit and in fact offered quite inexpensive Toslink cables for that purpose.
We asked many people about the throughput of Toslink and got universal feedback that it is more than capable of 24/192 provided that the sending and receiving units are capable, which they are in the Macs. This stands to reason since fiber applications are used at much higher bit-rates through fiber in other applications. Since Marty has a Meitner and wanted to use the DAC in his player for a music server, we spent a lot of time with their engineers who validated Toslink as an excellent way to connect to their unit and in fact offered quite inexpensive Toslink cables for that purpose.