Hello,
i am using a simple audio chinch cable to connect my kemper stage with a Native Instruments komplete Audio 6 MK1 Interface per S/PDIF.
The cable is 3m long and it works Fine.
The Kemper is the Master (clock internal) and the mac is set to external clock.
I’ve tried the Kemper as Slave. It gets a snyc but no signal came in in the DAW.
Also a 6 m cable tried, but get a lot signal loses.