Thanks Jim
That clarifies a few things. Hopefully I get clean audio by just dropping the gain and output (and using the correct cable).
If not, I'll be getting another module to sort it out. That was a question to which I had difficulty finding an answer on google: whether a dedicated output module was needed. So thanks!
I am using a Focusrite 4i4, which is a pretty versatile little unit. Great with all inputs so far, but haven't tried it with modular gear yet... I'll find out soon enough if it can handle it - I suspect it will.