i have a 2003 ml 350 without naviagation and bose system. i was wondering what ways are there to make the sound system sound better. are there any add ons i could get ?

 

mercedes is hard to upgrade...co'z of their plug n play connection.............i guess you can bring it to radio car installer.......or if you want you can go to ebay i saw some intallation kit there for the radio mcs gps.....on ml model..........