I'm coming up against reality vs my expectations of the MEGX and an 6X with respect to operational restrictions that I didn't fully understand at the time I made the MEGX purchase. I had thought that the PBC/6X was going to "add" the MEGX loops into its matrix control such that the PBC would continue to be the master and the Megx a slave (i.e the MEGS Loops would "show" on the PBC/6X). In some respects thats true, the 6X can send PC/CC's to the MEGX and initiate, change, or turn off a loop or group of loops or change MIDI controlled feature and presets of a pedal but it appears I can't mix and match the order of loops/effects between the two boxes. In other words "cross mix" such that loops from the 6X can be mix with individual loop order on the MEGX (e.g. 6X#1, MEGX#4, 6x#3, MEGX#5, 6X#2 are on and in that order) I don't know if its even possible to do such a firmware upgrade but it really would be advantageous with respect to ordering ALL pedals under Mastermind control.