This is a feature request to add an indicator onto the display window to show when the “Monitor CAB” is turned off in the output section. More than once I had forgot that it was off and spent a few minutes wondering why my tone sucked...
Another way would be to link the “cabinet” indicator button on the Kemper amp section to the monitor output, so if you turn it off in the output section the indicator light turns off as well, even though the mains still remain active. Pressing the cabinet button would still deactivate the mains/ all cabinet.