The optional Harman/Kardon® Logic 7® 610 watt sound system offers digital surround-sound through eleven high-performance speakers and a subwoofer, all especially developed and adapted for the interior. Enjoy your favourite tunes in Dolby Digital 5.1 and DTS, transmitted through eleven output channels and one sub-woofer channel. The bass, treble, volume, balance and fader can all be individually adjusted for finely calibrated listening pleasure.