All Porsche audio systems for vehicles without MOST® bus technology are protected by a security code. They also feature a removable front panel and flashing LED. The LED is automatically enabled whenever the ignition key is removed. Each system package includes a high-quality 4x 18-Watt amplifier unit. The speed-dependent volume control is active up to 250 km/h (155 mph), ensuring consistent audio output. The TrafficPro navigation system uses DAS (Dynamic Autostore) to display all available stations along with their RDS codes. The dotmatrix screen offers a choice of positive or negative display for optimum legibility under all light conditions.