The # of speakers is no matter of been impressedYes D. I modified all my previous cars' sound system except the Audi with built in B & O 13 speakers plus a sub.
Only tells me the sound comes from everywhere and there is not really a front stage.
a 2 way, active system properly installed and good tuning would out perform any OEM system.
I'm sorry I may be going too deep into this hobby, I could guess most of CLA owners here have never been exposed to a system like I'm talking about
Still all these OEM sound systems are not crap, they sound pretty good, some better than others, but none of these companies takes the risk with so many different users, on a very good SQ system you tune for a specific user, if I Demo my car and this person is 3 inches taller than me he would probably be missing a big portion of the tuning so for MB, Audi, BMW, etc... it's safe not to go that way; too many variables.