Apart from the catastrophic mounting on a Honda Civic FK3, well worth the effort. I should have ordered the unit much more. The use of the SD card or a USB stick is extremely poor solved. You must map a Ordnerstrucktur CDs that it acts as a CD changer. MP3 Tacks are not going well. I use it at the stereo Aux einganz with the phone and it sounds wonderful, with good input signal can also be neatly expected pressure. I would buy it again.
PS: by working on installation in Civic FK3 on the center console from back to front to get to the bottom screws of the radio!
