I've been searching and reading this topic for awhile but couldn't find an exact answer. Is there an better quality amp available that can just be swapped with the stock amp? I'm pretty happy with the sound quality, I just want to get rid of the distortion at higher volumes. Also I have NAV if that makes a difference. Thanks!

 

Not really, the problem is probably the speakers more than the amp. We have a speaker upgrade kit that works off of the factory amp that sounds way better with lower bass, tighter bass, and lower distortion. It's not louder in an absolute sense, but you have more usable volume.

If you amp those speakers, I think you will get what you have, but louder.