Here´s a quote from Oliver Munyak from Kemper. I hope this helps you to answer your questions that the KPA doesnt use IRs.
Quote:
thank you very much for your email and interest in our products.
Yes, you can do that ( using cabinet only ) but there is no need for that because your amp and the
profiled amp will sound and feel exactly the same.
We're not using Impulse Response for capturing the Cabinets and Amps.
We use our own profiling technology which is far beyond impulse response.
Sincerely,
Oliver Munyak