Specific complete kit for retrofitting the B&O Premium audio system with PR-No.: 9VS in the Audi A6 4A The cable set connects the radio/navigation unit to the amplifier, subwoofer and all other loudspeakers Extension of the existing loudspeaker system (PR-No.: 8RM, 9VD) You get a much more powerful sound with rich bass The existing loudspeakers in the doors, tweeters, center loudspeakers and subwoofer will be replaced by better and more powerful loudspeakers Additional loudspeakers are installed in the A and D columns. A total of 16 loudspeakers are then installed Settings in the MMI: treble, bass, subwoofer, surround Selectable option: Avant Limousine Scope of delivery: Cable set 1 x subwoofer for the spare wheel well 1 x center loudspeaker 2 x surround loudspeakers 4 x woofer doors 4 x tweeter doors Panels of front + rear door speakers with B&O logo A and D column covers Microphone Screws Coding dongle Notes: This is not the premium surround sound system with PR number: 8RF Currently only available for vehicles with active loudspeaker (PR no.: 9VD), passive loudspeaker (PR no.: 8RM) on request Currently, retrofitting of vehicles from model year 2024 is not possible