Basically ive been looking at the manual of logics plugins, and i have run into a little problem. I like to know what is actually happening to the signal and not just what I am hearing (although that it what really counts). I have been looking a distortion effects and the controls. I have noticed that alot of them have a "drive" slider. Now on the bit crusher, and the clip distortion the drive slider - "Sets the amount of gain applied to the input signal" but on plug ins like distortion and distortion II the drive slider "Sets the amount of saturation applied to the signal." I tried to pretend to myself that were the same thing but the Distortion II has an pre gain knob that - "Sets the amount of gain applied to the input signal." which I figure is the same as the drive on the first two I mentioned. the main thing I want to know is what is the difference? and why do some plug ins have both? When you Saturate a signal what are you actually doing? on synths with drive knobs what is that doing to the signal? i have been all over the internet trying to find these answers but i just get stuck in guitar amp forums.....nuff said any help would be great! Dont simplify :) thank you in advance!!! Andrew