Mic ---> Preamp ---> ISO track
^^
| |
Fader
Now whether the basic mode puts the fader gain stage before the kashmir mic preamp gain stage, or whether in Basic mode the mixpre switches from a 3-gain stage configuration to a 2-gain stage configuration (kashmir mic preamps and output gain stage, skipping the fader gain stage), I have no idea. But if overall the Mixpre across the full signal path provides an EIN of -128dbu and a dynamic range of 120db, I'm not sure why it really matters.
Todd... I agree with your analysis. Thanks for sharing it.
While my signal flow diagram was (is) not ideal, what I was driving at was, "Can the fader be set up to control preamp trim?"
Some say, "yes."
Others say, "no."
A few ask, "Why does it matter?"
It might be the case the difference is inaudible for all practical purposes and therefore "irrelevant" in any reasonable use case.
BUT... We are (with limited exceptions) a group of technically-minded gear heads. For that reason, I propose the answer matters—if only from the perspectives of knowledge and accuracy.
In no event is it a deal breaker for me. But I'd still like to know the answer.