With the Kemper Amp (a profiling amp) it goes through a series of "noises" to get a profile: https://www.youtube.com/watch?v=iL7tWFhH8E8
But yes, you get the sound of a specific EQ settings.
But yes, you get the sound of a specific EQ settings.
When you send through a clean signal, you measure A*B. When you get distortions, you know you’re only measuring B (because they are introduced after A). Then you derive A from that.
Playing feel on the other hand I guess is a different argument. Not sure if that is a placebo though. I do prefer the zero latency of all analog gear.