When you use a clean amplifier/profile, and then put multiple distortion/overdrive boxes in front of the amp, turn them up, and play lead.
I have tried it on the kemper, with 1 to 4 stompboxes, lots of different combinations, but i never really got that sound where the tone is sort of falling apart.
My friend brought over his stompboxes for a completely different reason, but i patched them through the loop and there the sound was. I turned on 3 dist/od pedals at random, without touching any controls, and i had the sound immediately.
The sound i'm after is the sound in the solo that starts 2.22 in this song:
https://www.youtube.com/watch?v=EcQkgbI2qFk
Am i doing something clearly wrong, have you achieved this sound, should i just give up, any suggestions?