Audi offers high-end Bang & Olufsen sound system configurations as an optional premium upgrade on many of its vehicle models, establishing a celebrated collaborative partnership that began back in 2005. However, not every Audi sound system is built by Bang & Olufsen; base models and mid-tier trims typically come equipped with standard factory audio systems or alternative branded options such as Audi's own sound system or premium packages by providers like Sonos or Bose depending on the specific model year and vehicle class. Buyers must select the specific Bang & Olufsen Advanced or 3D Sound System package to receive the bespoke B&O acoustic setup featuring motorized tweeters and custom aluminum grilles.