Car Audio and Video Upgrading for Mercedes-Benz S Class

1) upgrade the original system to android system ( keep the original screen and functions )

2) upgrade the original USB CarPlay to Wireless CarPlay & Android Auto

3) make the original screen to have the function of downloading the apk

4) support Dolby surround audio music

5)optical output port is easy for Audio Upgrading

6) Penhui DSP amplifier ( 12 CH & 18 CH) for the customer choice

7) Support the karaoke function in the car

8)support AC-3 , DTS decoder