As someone who got his career started with a 12V job at a high end local company, I can honestly say I have zero desire to mess with the audio in this car. This is my third H/K equipped car and I think it sounds the best (previous was a '10 MB E550 Coupe and current SRT8). I've done elaborate installs on other cars and am happy these days that I can get a respectable setup for not much $$$ in a factory system (which frankly has been the death of the small independent shop).
That's not to say I won't be following this thread....I will because I dig it.