Since the Suhr Feedback knob controls the amount of negative feedback, does anyone have the approximate values of the knob in it's rotation? For instance, the center detent at 5, is that typical Marshall level? It'd be nice to know that 2 = approximate plexi level, 3 = approx Bogner, 5 = JCM 800, 7 = Rectifier, etc. I'm sure with the level of amp tech intelligence on forums, that someone could figure this out? I love the idea, but I feel like I fight with this knob and would like to understand it better...