Why do I not get any audio signal to or from the SPDIF I/O at 88.2 or 96k?
The Nucleus USB Mac driver is not currently capable of 88.2 or 96kHz sample rate operation when using the SPDIF I/O.
SSL will introduce this functionality in the next software update.
Please note that this does not affect the analogue I/O which works up to 192kHz. It is also only limited to Mac OS - the Windows driver can use SPDIF I/O at sample rates of 44.1-96kHz