A4 2.0 models are fitted with a Chorus sound system that features an AM/FM radio/cassette and a six-CD changer, the latter being conveniently mounted in the (lockable) glovebox. The stereo is simple to use, though the on/off switch is on the far left-hand side and no controls are mounted on the steering wheel. No less than 10 speakers are provided. A premium 10-speaker BOSE sound system with a total output of 250 watts is available as an option on all models.