Hi all,

I am very lucky to take delivery of a low milage 2016 750i xdrive, with the upgraded Bowers and Wilkins sound system.
Being an audiophile, I want to know as much about the system as possible. So I called the Genius hot line and they didn't have the answers.
A Genius is also coming tomorrow to go over the car with us. She won't know either.
So here goes:

1. When playing songs from a USB stick it seems like it plays the file on the usb without compressing it. i.e.. lossless FLAc files. Will it play higher rez files?
2. When you save from usb the files are compressed by the system. Any idea what format they are compressed to? i.e.. MP3 or other
3. Does anyone know how to turn off the compression when saving?
4. What size is the hard drive in the vehicle?
5. What DAC is used in the vehicle?

Thanks,

Jeff