You are welcome. Your audio related questions have been answered in detail above by other worthy members.
Well as far as saving of speakers settings is concerned I have not tried that yet. The pre facelift player even did not remember the last played song position and either started from the beginning of the song and it had worst Ipod compatibility that it could not load the entire songs, but shorter playlists and even did not remember them and every time I had to start car I had to again go to source, Ipodlink and then load playlist.
This player has slightly better musical interface as all your music sources are in tabs in one screen and it remembers last played song, source and position.
But the facelift player is less tolerant than the pre-faclift player when it comes to installing apps. Install any other app and facelift player will start freezing and behaving erratically.
What I have read above facelift pre does not have RCA ports for amp and sub.
And about odo meter setting there is a nob on the lower right side of instrumental. You can press it and find trip a, trip b, ado and light setting. For light setting ignition should be on or engine in running state.