Huh? Is there no correlation between pre amp output and amp input sensitivity? This is what ultimately determines volume control position in reference to max power output, no? I mean generally speaking, if my pre puts out 2v and my amp has an input sensitivity of say, 1.5v, won't the pot be at around 12-1 o'clock? Is this not a typical scenario? OTOH, would I not be using up the entire pot if I have 2v out and 2v in?