Car Audio Use Details for USB options!
USB SD has MP3s for the widest compatibility with automobile manufacturers’ audio systems. If your car’s audio system has a USB port, these near CD quality tracks may play using the USB source menu option.
USB HD has WAVs that require a much newer automobile or aftermarket audio system to possibly work with your car’s USB source menu option.
There are too many car audio system variations to provide compatibility information…so please, research your car’s manufacturer’s audio supported formats and requirements. We can not guarantee this for all car’s audio systems…