Moj Infiniti M37 je ovo imao prije 10 godina sa premium 16 speakers Bose Suround System. Audi krntije nemojte kupovati. Cim predjes 100000 milja sve se lampice popale k'o light show u autu. :-) Also standard on all M models is Active Noise Control, which generates "canceling" sound from four door speakers (and subwoofer for models equipped with a Bose sound system) to reduce unpleasant engine harmonics. The cabin noise levels are monitored by two microphones located in the M's ceiling, with no action needed from the driver and passengers except to enjoy the quiet, comfortable cabin.