It would be fantastic if there was a good usable solution to use in-ear systems with the Kemper.
I see the same issue being discussed in various discussions.
When you use a boost volume for a solo, the volume of your in-ear is also increased... and that is something I and I think many other Kemper users do not want.
I've been struggling with this for a long time and haven't found a good solution yet.
Kemper, with a good in-ear solution you will make many Kemper users happy.