Just got my FD-02. Have not even tried the 3.5 mm cable as I also just got 4.4 mm cable. Thus literally everything has just started burn-in which feels amazing. For the first few minutes there is almost no sub-bass and is very hard to drive.Then everything gets better and better slowly.
I probably won't take anymore photos but I might be able to help if some of your have question about it.
For instance, a picture showed the vent which is rather small and hidden, and I am fairly satisfied with its isolation which was one of my major concern before trying it on.