Woah Pure Cabinet WTF!!! What a change sounds even better - I was messing about the with the ouput section and came across this box unchecked and then checked it, it's like things opened up...
I've now read up on it, it's amazing to think Kemper took the feedback and offered up the solution, how smart are these guys 
They sure are smart 
I love pure cab and so do a lot of other users here, it's one of my favourite features that's been added to the KPA
Woah Pure Cabinet WTF!!! What a change sounds even better - I was messing about the with the ouput section and came across this box unchecked and then checked it, it's like things opened up...
I've now read up on it, it's amazing to think Kemper took the feedback and offered up the solution, how smart are these guys
true, but there are cases in which the PC doesn't do that much. I have tried in many commercial profiles and at every setting, from low to high the sound gets a bit undefined. from many experience of kemperians I have been told that the PC is like a manna for not too perfect profiles.
if interested read this thread: pure cabinet makes profile a bit muddy
I use it purely as a phase-issue eliminator / reducer.
In almost 100% of cases, it's sub-par (amateurish) profiles that require PC's being dialled up. The flag that screams "more PC" for me is high-end harshness / sharpness / phase-cancellation - I dial up the PC amount before even considering EQ tweaks.
Given how wonderfully it works for me this way, from my perspective it's the phase-reduction tool of the Kemper. The fact that it has the effect of "removing the microphone" from the equation, as has been claimed, is to me merely a side effect of said phase reduction. The less professional the profiling process, the more likely mic choice and positioning is to manifest phase cancellation / comb filtering in my experience. This is why so many low-budget profiles sound so different from "amps in the room", IMHO; it's the constricted, "suffocated", phasey sound of the mic setup that we're hearing.
All IMHO, of course, and YMMV.
To me PC is the difference between hearing what you as a guitarist hear from the cab or what everyone else hears after it's been mic'ed and put through a desk/mix, be it studio or live. Individuals preferences probably depend on what part of the signal chain they've spent most time enjoying hearing as a guitarist, I'd guess.
