Thank you both. I hope I never stop learning.
I think I will do another profiling session with the UNLEASH so that I can do it in my home. Just in order to learn as much as I can about the procedure. And then, later, I will organize a session in a studio. There is so much knowledge about profiling, that the studio engineers cannot help me because it is different than recording.
Especially EQing the profile before the refinement step seems to be crucial. And this is difficult to do when you are in the same room with the reference amp. At home I have a hole in the wall between my kitchen and the livingroom. But I have to tame the amp with the UNLEACH. That's not ideal, but good for a start. My last profiling I did in the rehearsal room of a friend. The amp runs free (without attenuator) but EQing was only through noise-cancelling headphones. (BOSE quiet comfort 35) Now all those profiles are a bit too bright.