After much consideration I have decided to ditch the 4cm ( all that going in and out cant be good )
And gone straight into the kemper.
Its still controlled by the G-systems controller but it isnt in the audio signal at all. I have a lead going from the kempers monitor out to the G , so I have a Tuner on the floor. Volume and expression from the KPA
Yes. Its an expensive controller, but with just the 1 cable going to the rack and all the options, it seems its the best one out there right now.
Oh my god the Transpose fx......