My assumptions:
- Good sound
- Good radio reception
- MP3 capability
- USB port
Since the Sony car stereo Sony MEX-N4000BT comes with advanced equalizer technology, the sound quality was very convincing.
Various settings allow guarantees optimal sound adjustment to every musical taste or style of music, be it classical, rock or hip hop.
I'm not a fan of reading thick manuals, and so I - as always - just turned on the radio and the operation carried out quasi intuitively. That works perfectly, because in my view the operation is very logical and does not require a "node in thinking".
As is now usual, the front panel is removable; a corresponding envelope is included.
Whether that ultimately serves the diene steel protection, is probably more a matter of faith; Anyway, I have been practicing the removal of the control unit for approx. 15 years, and I had so far not recorded any theft.
Radio reception is excellent, and I FM (VHF) use exclusively. One can also receive AM stations, but that should be passé actually for 20 years.
I tested with a variety of MP3's USB sticks, which I usually use which Verbatim. Up to 32 GB I've tried, and all the sticks have been processed. Only this way: 32 GB, depending on the recording quality corresponds to an amount of more than 5,000 MP3's; that should be enough for the most extensive journey ...
On the subject of Bluetooth: The connection to my Huawei Ascend G700 worked fine, and the app can be the sound settings more easily than from the keypad. Streaming music is outstanding, but is naturally limited by the capacity of the smartphone battery.
Speakerphone works, but is heavily dependent on the position of your smartphone for the microphone not included. If necessary, So you have to buy the corresponding microphone in addition, if you can not install the corresponding smatphone.
Conclusion: It's amazing what you can get today for the small in relation purchase price. Anyone who is interested in a new car radio, should this model (with external microphone or equivalent) take a closer look - or listen better.