c) High noise floor
I notice this in between songs, the sound gets turned up too high. When a song starts out with silence, clipping happens when the music starts because the volume was adjusted up too high and doesnt get turned down quite fast enough.

b) Freak transients that cause the other stuff to suddenly become quiet
I hear these too, and I have no idea how to fix them.

Overall it sounds great, I work in a noisy environment, and voladj keeps everything audible for me.

Thx,
Sean