Hi Filch
you may want to describe all settings (routing/clock) used on the H8000FW to check if they are correct. ADAT cables are standard so there isn't a specific one that we advice. The only problem you may have is that the ADAT ports on the H8000 are quite close so if an ADAT cable has a bulky connector it may touch the other one (I/O ports) and get into the way. This can create a bad connection to the ADAT light beam.
best
I
