I have noticed very similar problems since I upgraded to 2.0, in my Nissan XTerra. The four channels doesn’t seem to stick. The empeg knows it’s in the car because the fader option is there.

I’ve found that when I’ve wanted some volume, it didn’t sound as good as in the past – so I fiddled with the equalizer and changed it to four channels and then the music had its “life” back. I’ve had to do this several times, so its not just my own confusion with how the menus work.

I haven’t had time to apply the scientific method to debugging the problem – I’ve only fiddled with the equalizer while driving. I just thought I should let hussein know that I’m seeing the same things he is. I’ll post again when I get a chance to really try to figure out what’s going on.