Midi 4 Channel Master

In this Stage Setting trought:

- the slider 1 controls the switching of zone/channel 1

- the slider 2 controls the switching of zone/channel 2

- the slider 3 controls the switching of zone/channel 3

- the slider 4 controls the switching of zone/channel 4

- the knob 1 controls the volume of zone/channel 1

- the knob 2 controls the volume of zone/channel 2

- the knob 3 controls the volume of zone/channel 3

- the knob 4 controls the volume of zone/channel 4

I hope it can be useful!