There is a thread I was reading now closed by the moderator called:
Jamming on the Keith M. Track using the Kemper
They heavily endorsed a profile called:
MAR JMP Golubc4, which is currently on the rig exchange.
When it was previewed in my profiler it was nothing but high pitched signal tone feedback right out of the box.
It feedsback when your guitar volume is on zero, beware! (I was wearing headphones)
Turn the KPA gain down one light and it will stop feeding back.