you don't know how much of a favor you did yourself by getting the premium sound. the difference between the premium and non-premium is literally NIGHT AND DAY.
evidently it's the most powerful sound system bmw has ever put in a car. and it shows.
you might not have wanted it, but you got it. and you got it the right way.
congrats on the beautiful car. love mineral white. and a big high five to your girl for prodding the whole thing along. a good gf nudges - but doesn't push or demand.
now let the modding begin!