Is it possible to adjust the stock amp?

I've searched the forums, and I can't seem to find anything on this topic (although I'm sure there probably is much discussion on it).

I looked at the data sheet that someone else posted, and it seems the ganes are fixed on the amp. Is there anywhere else in the system that can be tweaked except on the navi unit itself?

It seems the radio is much louder than xm radio. I can't get my xm loud enough!!!

Any help would be greatly appreaciated.

 

No way to tweak the factory amp... anywhere... Sorry dude

 

Figured, thanks for the reply.