Guitar speakers by nature roll off a lot of high end frequencies, the logical reasoning behind making out2 wide and is so running 4 cm into your amp performs as well as possible in the higher range frequencies. If the axe2 is best designed to run on a flat response sound reproduction system then running wideband into your amp which is far far from flat response would give you POTENTIALLY a more even frequency response. Problem is a lot of newer designed amps(read high gain or some boutique high end) perform much better in high frequencies already vs vintage design amps, better transformers, cleaner circuits, tighter tolerances on parts... Or... for instance guys that run the popular EV model speakers which have wider frequency response, same problem different path. So then you take these amps which don't necessarily roll off highs as much(and tend to be hissy on their own as many high gain amps are) and you run the wideband input in to them, you get enhanced hiss. The problem is not the logic behind the wideband output, it is, in my estimation, the frequency reproduction of whatever your setup is. I'd imagine most guys in here talking about not having hiss are running traditional vintage type design amps through regular guitar speakers, guys with hiss are likely running out 2 into a modern high gain amp, or a speaker setup that already produces high frequencies more than a traditional guitar speaker. Don't get me wrong I'm no sound genius here, but this seems pretty basic and logical.
