Correct.
The Kemper has it's own pre-amp.
Are you sure about that? A mic plugged in directly here gives a volume equivalent to line level, I.e. very very low, there's a multiplier factor on software for the signal, but that just means you raise your noise floor tremendously, it's not a preamp. I see no evidence of a preamp on the KPA and would always recommend that in order to get a good clean signal to your kemper when profiling at anything below 10 or levels where you will encounter distortion in the chain its vital to use a good quality preamp.