Audi a3l is equipped with bo speakers. According to the relevant information, the Audi A3L mid-range speaker was modified and upgraded to a high-end BO car audio car speaker. Audi, a German luxury car brand, has four interlocking rings as its logo. It is now a subsidiary of Germany's Volkswagen AG. On December 20, 2018, the 2018 World Top 500 Brands list was released, with Audi ranking 51st. In October 2019, Interbrand ranked 42nd on the top 100 global brands list.