Friendly Tach! Could sometimes in the car choose the processor-generated environment: “Concert Hall”, “Jazzkeller”, “Church” etc. I always forget the name for this, but the sound set on the driver’s seat was amazingly good at every volume. Who has understood the, hopefully apt, description can perhaps tell me if there is: 1. such a thing can not be retrofitted for the car. Loudspeakers are installed enough. 2. is available for the system at home, preferably retrofittable. older, but still good Bose “Lifestyle Model S”. BMW no longer offers the Wg. lack of demand (and pig price I add). Retrofit would also not be possible, this must be done on the factory side. Wait for relevant information. vG