I put Parrot MKi9200 to Lexus LS400 (98-2000), with Pioneer Navi system. Works great. Line in signal - in full operation, Parrot internal amp - on calls only. Subwoofer work well, all balance, fade, eq - work great, as radio or cd changer. I have: CD changer, Radio, USB, SD Card, Ipod, Line in. I have listen "flac" quality music from externel signal, without any problems.
Skills is needed (open Parrtot, and soldering) to install parrot in the this car with all functions and full operated line out.