Good radio with a small weakness

First I would like to say that I have not bought the radio via Amazon, but for the evaluation does not matter.
Included with the radio control unit, adapter cable must be replaced with the possibility of permanent and ignition Plus, a built-in frame and the associated Blensrahmen. The device is a removable control panel has I miss a box where you can put in the control panel. I used to advance a Sony car stereo, there was a protective box for the operating unit with it, unfortunately not, too bad.
Since all coarse information can be found on the device on the Internet, I would like here only to take the things I have noticed so.
Display: to display, I would note that it is very well lit and an integrated dimming function has, if I turn the light on the car dim the display down something that's a good thing, because the "daylighting" is already very bright by me. favorite color is white, with the already extremely cold is more white, so merges into bluish. Schade is also the radio preset buttons are assigned functions for the USB mode, scroll through album for example, pause button, random play, etc. The buttons are numbered 1 to 5, the additional functions including but are illuminated, no. In the dark, you can then only guess.
Radio reception: So I hear no radio, if I can not tell the difference in the reception quality to the original radio.
USB: I have a Micro USB Stick ordered to 16GB. The micro-drive is only minimally out on the radio front, and therefore does not interfere. On the stick are currently around 60 MP3 songs saved and after switching it takes about 1-2 seconds until the "reading" is complete and the music starts. If the stick is full, the "reading" probably take a little longer, do not bother me personally but.
Bluetooth: I use the Bluetooth function with a Sony Xperia Z for calls. The works so far very good, the problem is however that the interlocutor in the vehicle sounds a bit dull.
To set general: So the device already has enorn many settings without manual would be difficult, the BDA is however well designed and provides descriptions of each point exactly. I think it's very important to read the BDA, because with the amount of settings which is really beneficial.
If you want something to "play" you should download the "Sony Remote app" on your smartphone. This allows you to control the device, select sources, adjust the equalizer, the songs appear, etc., all from your phone display. Nice gimmick.
All in all I am satisfied with the device, only the dull handsfree disturbs something.

Addendum: I found today that always takes over the radio when you turn the volume previously belonged. Many will say: So what? Störts me, because in the afternoon when I'm driving home from work home kommts ever more often I hear some loud music. When I abstelle the car early in the morning and boarding again I get a heart attack. My old Opel Radio of anno Tobak could be set when turning a certain volume was preset. Great thing, Sony has probably not ....... or I have the adjustment not found :-(