Specific complete kit for upgrading the B&O Premium audio system with PR no.: 9VS in the Audi A7 4K The cable set connects the radio/navigation unit to the subwoofer, the centre speaker and the speakers. Door speakers Extension of the existing speaker system (PR no.: 8RM) You get a much more powerful sound with rich bass The existing speakers in the doors, tweeters, center speakers and subwoofer bass will be replaced by better and more powerful speakers. Scope of delivery: Cable set 1 x subwoofer for spare wheel arch 1 x center speaker 4x bass speaker doors 4x doors Tweeter Screw Coding Dongle Notes: This is not the premium surround sound system with PR No.: 8RF Currently, upgrading vehicles from model year 2024 is not possible