Mostly I have ignored "pure cab" as my first snap judgement was not that helpful plus it just seemed something else to throw in that may be unnecessary. Just trying a few different things to get the "top end" of my sound that last .5% I was messing with it and liked what I was doing with it around 2. For a quick assessment it seemed to "soften" the high end in a good way and "naturalized" it a bit. I would like to know some opinions on it from users that have really listened to it. What do you find it to do to profiles?