Thanks Michael. I'm at 44.1 but the Apollo is set to internal clock. Not sure of the downside of switching the clock to S/PDIF it but it sounds great (with pedals) so my feeling is not that's not the issue, although it could be. I may go back to using analog ins just for comparison.
Thanks Money Man. I just cut some tracks using one of Bert M's profiles. I went on a bit of buying spree when I first got the thing and have some of M Britt's, The Amp factory and a couple from Top Jimi. I think the Bert M one I used was a freebie. I'll check into the ones you mentioned.
This board is set up quite differently than others I'm on so I'm still slowly figuring out where everything is.
I might be overthinking, but I've been using these pedals in front of an amp for so long (I've had those Marshall pedals since they were new) that I really feel the subtleties of the guitar-pedal interaction. Of course that's never going to be exactly duplicated by the Kemper and I don't mean that as a slight. Also this was more of a curiosity question as I am VERY happy with the pedal+Kemper and perfectly fine with using it that way while continuing to learn the K as I have more time and experience with it.