Mercedes C Class has a Full Audio overhaul by In Phase IPA-1601 and IPA-1041
If you want to have a world class audio system you have to do it properly and cut no corners, and of course go for In Phase, These amplifers really bring the car audio to life, Running a Full DB Audio Speaker setup the In Phase iPA1601 and 4 channel IPA1041 really make the DB audio Sing and bopth work great togetehr giving you an outstanding audio sound stage.