I have a Alpine IVA-D800E and its the same everything flat and bass boost 15/15 and can turn it all the way up to 35/35 and no distortion light comes on =/
However i do have a question for that, I never listen to music past 18-22 so wouldn't that mean id need to turn my HU up to 35 just to get the maximum sound/potential out of my system?