I've owned this for about 6 months when I bought it direct from China. As a 68 year old it took me back to a time when I used to go to live concerts. But there were hidden costs involved. Firstly the 200gbyte micro sd cards (yes it does take this size, not only 128 gbytes) and then I felt compelled to upgrade my Sony XBA H1's to Sony XBA H3's at a cost of £250. It's so worth it, easily mastering everything from opera to rock music with a freshness, open soundstage and clarity with no element of distortion - unless it was present in the original recordings - Sorry Rolling Stones but the recording quality of much of your music was absolute crap.
 
I have now got 6,000 radio plays at 128 mp3 stereo standard on one card and my complete collection of 250+ CDs twice at 320 stereo mp3s on the other. Why twice, because I really do like random play, and the XDUOO 3 is really bad at this, so I re-recorded all my music a second time, separating them into 14 different files which I then feed into the random play facilities.Even now it can play the same track twice in the same listening session - the random play facility is really bad.
 
The second bad feature is that the display - OLED apparently. It is so dim I have to set up the play facilities in a dark corner before I go out, it just isn't realistic to make any changes in daylight - cloudy or not. In truth the control keys could also be far better.
 
Despite these moans I still whole-heartedly would recommend this product, based on its excellent sound reproduction, but this isn't the one to go to if the playback facilities are important to you.
 
I'm now hoping for, and trying to find a firmware upgrade which will address at least some of the issues.