The signal is appearing in TOTAL MIX on ADAT 3/4 in both hardware input and hardware playback but it does not appear in the main fader out or anywhere in Cubase. Are there specific connections in Cubase studio? I have tried all 18 inputs showing there as Fireface 400 (1B4) 1 through 18. I’m stumped?
What do you mean with "hardware playback" ?
In Totalmix there is the top row chanels called hardware inputs, only there should your signal appear unless you do some routing.
The middle row of channels in Totalmix are the software playback channels, signal from Cubase or any software is there.
The third row on the bottom of Totalmix are the hardware outputs, there is signal visible only when it is routed there.
There is probably something not yet ok in Cubase. There are no special specific connections, they are the VST input and output connections, you can give individual names to those channels and enable them for Cubase.
M1-Monterey, Madiface Pro, Digiface USB, Babyface silver