HiFi is different

The unit I had only 1 day in use.
Unpacked, put on the table and, it wobbles. At least the mechanical processing should be fine. The paint looks modest, all in all a bad first impression. An instruction manual is missing, nor is it to get online. (10/16/2013) With a little technical knowledge to program is not a problem.
I connected the radio digital (optical). The sounds are quite different. DAB looks dull, FM was as Internet reception, ok. On the positive side the existing WLAN - antenna, otherwise there for DAB + and FM only a so-called dipole antenna (length of wire). The reception in the FM and DAB + was very poor and it is not possible to use external antennas. The radio also has a USB - connection, which is accessible from the front not. My USB - Stick was recognized without problems and playback of MP3 was not a problem. The titles scroll on the screen, unfortunately the names of the folders can be displayed only with 8 characters. Not exactly up to date.