I think that the loud monotonous racket that ANR gets rid of is mostly from
the prop(s). Once that is gone, I can hear our engines better. In fact,
the only time I find it an advantage to turn my ANR off is to check and fine
tune my prop synch. The ANR masks a slightly unsynched prop to the point
where it is uncomfortable to people not wearing ANR's. Those wearing ANR's
don't seem to notice it. Of course, grossly out of synched props are easily
noticed by even the dead.

As far as the stall horn, we have only a light and our gear horn is
extremely loud no matter what you're wearing.

Jim