Audi Chennai - The Audi Q7 comes with the BOSE 3D Sound System with 19 speakers, centre speaker, and a subwoofer. It has a 15-channel amplifier with a total output of 558
HOW-TO] Upgrade to Audi/Bose Sound System | Audi-Sport.net
Upgrading the non-bose sound/audio system | Mazda CX-30 Forum
Mechanicsville Audi S6 Audio Upgrade Is a Concert on Wheels