MB stock radio/sound

I did some research, including talking with MB in New Jersey, and reached the conclusion that it is very difficult [if not impossible] to "replace the system" as it is too integrated with the car. So I got rid of the GLK. The standard Audio 20 system is terrible. I wasn't being fussy but it is a very poor sound system. You're right the NAV system is good which I have in my E350wagon. I would caution potential buyers of any MB with the Audo 20 system to beware. Unless your only listening preference is talk radio or nothing at all, I would not acquire a vehicle with that system.

There are aftermarket radio systems that will fit in the GLK. I know that I have seen threads here with others that have made changes.
I am fairly sure that replacing it would not have been worth the effort. The old saying goes "putting perfume on a pig" and applies here.
Most poor sound quality results from cheesy speakers, in home systems as well as automotive.
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