The Harman Kardon Premium Sound system, fitted as standard, offers elevated levels of audio refinement, with every component uniquely tailored to perfectly match the Quattroporte interior. To achieve this, Harman Kardon sound engineers worked very closely with the development team at Maserati. The core of the system is a state-of-the-art, 900-watt amplifier, delivering rich and detailed sound quality, whatever the source, be it radio, MP3 player, iPhone® or audio streaming device. No fewer than 12 independent channels are deployed, for superb balance within the car environment. A special high-performance subwoofer handles the low-end frequencies with ease, while the mid-range drivers and tweeters ensure that every instrument and every artist can be appreciated to the full. And with the 10 highpowered speakers carefully distributed throughout the cabin, this system guarantees sublime sound for all on board the Quattroporte.