Originally Posted by Kaldaien

The only thing special about Bose is/used to be that they would take a microphone into the car and test out the acoustic properties of the interior space and piece out a speaker system to match. Of course, this was done while the car was stationary, and Nissan vehicles have a lot of road noise across the entire model spectrum. GT-R uses a much more sophisticated Bose system that actually listens for and adapts to external noise, the same sort of thing you find in a Porsche Cayman.

That said, in years past where there was actually a separate Bose audio upgrade (w/ 6 CD changer) available for 370z trims without the tech package (e.g. Nismo), it was pretty darn pointless. Now that the tech package is available in all trim levels, they phased that audio upgrade out and it is largely a moot point - nobody pays an extra ~$4K for the Bose speakers.