FP 106C and MB4-II  have been updated to v1.5.
Both devices updates include:
- High UI optimization now allows faster and lighter surfaces, and fast vu meters even on heavy projects.
- Various minor corrections.

The updates are available now in the respective user areas.
Installation: just overwrite your previous 106C or MB4-II.

FP 106C and MB4-II are part of SpaceF Devices Modular Mixing Systems which began with BlackBox II's "MixSat C2", to allow a much higer intergration with any midi hardware by allowing 2*119 Midi CCs per devices and allowing extending the number of stereo aux and busses easily.

Placing the MB4-II like on the picture is probably the best option as it allows to see all busses and aux, and gives access to the "Mix On/Off" button of the FP mixer, so individual channels can be routed either to FP mix out or MB4-II bus channels, or both or none at the same time (when going to neither the Mix Out or to the Bus, the channels are still available through their individual direct outputs).

The master mix out of the FP106 is just a 6th bus, giving a total of 6 stereo busses (1*FP Bus, 1FP*Mix, 4*MB4-II) and 4 to 7 stereo auxiliary effects depending whether the aux are chained or particular to each mixer.

Additionally, you can have a look at this video of the project connections, here .