I have made several profiles of my Quad preamp and I believe the current profiling process doesn't capture the tone of a preamp only, as good as it could. The manual says leave cab enabled. On or off it's still very easy to tell which is the kemper, and at this point, for live use it doesn't replace the quad. Was hoping I could profile the quad and swap it out with the kemper in my rack.
I have also noticed on full profiles that the cab portion seems to be capturing more then the amp portion. If I take a good sounding cab lock it, and scroll through different amps it all sounds very similar, it makes every amp sound the same. I would expect / hope there would be a huge difference, but it's a slight difference.
Same thing when running the kemper output through my Strategy 500 and v30 4x12 cab, all the amp sections sound similar with the cab off. I'm sure the strategy is coloring the sound, (presence and deep) but if the amp section had more weight in the profile, it would be more like when I swap preamps for real. Night and day difference.
Everything that I've said is when working with Hi gain metal profiles. I haven't spent any time on clean or crunch profiles. I've only had it a few weeks, so hopefully I'm doing something wrong. I will say for direct recording using purchased profiles, it's outstanding!