I'm not much of an audiophile so it sounds fine to me. Still using the factory speakers and amp so there was no bump up in quality there.
What I wanted was a way to do hands-free calling and texting, navigation, access to my music library, iTunes Radio and apps like iHeartRadio in my car which was never fitted for today's technologies. Would like to see ESPNRadio and NHLGameCenter (for radio calls of games) to be included in the future.