HA, took a leap of faith and I'm glad I did!!!
PureCab is so awesome it should be named "Mojo"
The *one* thing that wasn't perfect in the KPA until now IMHO was the high end frequency response, I've always felt something was a bit off there, and it was something very difficult to fix without affecting other frequencies that I wanted to keep if not boost. Now this is the interesting part, PureCab does *not* cut the highs, in fact my perception is that they're a bit boosted, but this time in the right place! Like the high end response has shifted or something.
Very, VERY welcome feature, thanks Kemper Team!