Hi Kim,
My name is Peter and I come from the Netherlands. I saw on the Kemper forum that you had come up with something to ensure that the boost/solo volume does not become excessive on your in-ear system.
I also have this issue and am looking for a solution that I have not yet found.
I think Kemper should be able to easily adjust the headphone output so that it is not affected by increasing the volume.
What have you done to protect your in-ears from solo volume.
Greeting,
Peter
Peter68