Got to be honest...
Just removed the eonon from my L7 E91, and could not be happier!
Previous owner had a amp installed, disconnected the L7 system just to install this unit!
Sounds much better, all speakers working the way it is supposed to be with the right power rating etc! Much better looking IMO, now ac controls are back to the original position, radio flushes better in the panel, and I have full access to the ashtray!
Cons, lost all cool functions like DVD playback, MP3 player, gps and rear view camera.
So if you have the Top Hifi L7 (fiber optic stuff) sound system, don't go with eonon.
If you have the Hifi sound system or less, think twice.