Horrific sound quality, most definitely not 4x 50w as promised. Also doesn't fit a double din sized car without a bracket. (didn't come with the bracket so I spent 4 hours trying to get the screen out because it was stuck.) very disappointed overall.
Tried fiddling with it for a few more hours and figured it out. It's not as easy as it looked, but I was wrong! It works perfectly with a bit of tweaking. 90 euros well spent.