Sorry if this is a duplicate I couldn't find it searching...
I notice many people do this with the Axe FX units, that is to run their tube amp through a reactive load box and use the unit for speaker sim and effects...Currently i've weighed options of selling the Kemper and just using my amps/preamps with my power station and getting a UAD Ox for the speaker sim portion(though i love having the kemper as well for playing/recording options). It would be great if the Kemper could do this job and eliminate the hassle of latency in the DAW when trying to load the IR's there (i normally have to shut down a lot of other plugins in my DAW and lower the buffers, etc which i don't have to do recording the Kemper).
(If this is already possible even better, but i haven't figured out if you can shut all the amp/profile portion off and just use the cab/effects).