Originally Posted by Robramrod
another thing every source has its own equalizer settings so you can use the equalizer to set up individual bands within each source. different sources require different frequency settings for example radio frequency is below sattelite radio, usb has a lower quality and bit rate than either and so does cd.
I think what he's saying is you can have separate eq setting for radio, cd, usb, etc., etc. Most head units have this feature built in. Not sure about the quality of usb and cd comment was supposed to mean though. Satellite and FM certainly don't sound better than my USB or cd.