I have that same amplifier. I never bought the cd nor borrowed one to set my gains. I used common sense, turned them up slowly until seamed about correct with volume setting, just like I did for any other ampilifier that I have purchased in the past. For me the gains we just about right when I received mine. I think that the cd is for that perfect settings and I'm not that picky. Not using mine for competition use. Not trying for skier to hear music, just for passangers while cruising or parked.

my setup is one cabin speaker per channel, no tower speakers.