Pobinr wrote:1] Analogue would lose quality as it involves going from D to A & back to D again.
Yes, in theory, assuming that the Kemper isn't doing any analog processing. If the Kemper has an analog stage, then the analog outputs may come be before the S/Pdif. Either way, if there's an audible difference between the main analog out and the S/Pdif out, I'd be sending it back for repair.
Pobinr wrote:But I'm still puzzled as to whether it's Audacity that sticks the spdif in 5 & 6 or the focusrite ?
I don't see why you're puzzled. It's clear as day in your post here: viewtopic.php?p=325299#p325299