Visually, the system also lives up to the design demands of the brand. As a design highlight, the tweeters are put in the limelight in the mirror triangle on the driver's door. When the head unit is switched on, they rotate through 360 degrees and move ten millimetres towards the passenger by means of a screw movement. This positions the tweeters for the optimum sound experience. If ambient lighting is activated, the two tweeters are illuminated in the desired one of the seven possible colours. The same applies to the roof panel, which is also elegantly accentuated by the ambient lighting and accommodates two of the three roof speakers. "We were able to invest a lot in development work," summarised Dieter Burmester. "You glide along weightlessly, because everything is just perfect," he is pleased to say. "Velvet and silk: our system sounds as good as the S-Class drives."