[PurM3]

Hello guys,
I have an 08 E93 M3 with premium sound. I was hoping for decent sound system when i was getting the car, but the sound system is truly a nightmare. I have been changing the equalizer quite a bit and done some research online with no luck. I'm not a sound expert, but I know what pleases my ears. EPS does not have crispy base and only way is I turn the treble up, but then the sound gets too loud for my ear. More importantly, the setup only works for certain types of music, sucks for others. Overall it is not a good experience with a sound system. I know I'm supposed to listen to the engine, but I love to have decent music in my car too.
My question is: is there any decent upgrade for the EPS?

PS: I have done a few research on site, but I dont seem to find a good solution.

Thanks in advance