HYPOTHETICALLY,
If i split my analog chain in to two big groups (connect each unit in series with another in the group) and then hook each group to the inputs of one FREQPORT device (GROUP 1: CH1+2 / GROUP 2: CH3+4), the settings i apply on each group will be global! And now, FREQPORT converters replace the AD/DA of my main mastering interface.. right?

Interesting, how the AD of FREQPORT sounds when clipped.