Hello everyone!
I've had a Z4M for many years and have used the AUX cable for playing music, but I saw the BlueBus (
https://www.bluebus.dev/) early this year so I ordered one for the car. The BlueBus handles phone calls and music which is what made it appealing to me.
My question is relating to the amplifier on these cars. On other cars (E39), the amp has a coaxial plug which is used for digital audio. I did not find a coaxial plug on the amp in my Z4M. I looked up my audio system in the build sheet and found that it is HIFI SYSTEM PROFESSIONAL (S677A). So my question before I button up everything in the trunk, is the pre-wiring (3 pin cable and 6 pin cable) for the CD Changer the best bet for audio quality? Is there no way to use a coaxial connection for better quality? I saw a coaxial cable dangling above the TCU, but it didn't seem to do anything.
Thanks!