Let me down ....

I've just moved into the player NWZ A15b.cew by the manufacturer. Even before the actual first publication I got sent to him, after a andererer online merchants transformed primary delivery 6-7 days without comment in 1-3 months. I was hot on these players about 5 my Sony MP3 player, the first with SD expansion and HiResAudio.
Well at 15.10. I held him in my hands ..... at 17.10. I asked at Sony to the return. This sending of this email took 3 days. A Joke!
But the return reasons:
1. An inserted 64GBμSDXC was irrevocably in their structure zerstört.Verschmerzbar but the time required for filling is unwiderbringliche lifetime.
2. No matter what files I played (MP3, FLAC or WAV) when I pressed several keys in succession, crashed the player, startetet re always welcome screen, again and again maneuvered for title, Ooops, a key too, regardless of whether Play Back or merely loud / quiet, the same Sche..e again.
3. Finally, it happened repeatedly that I had to do a hard reset, since not even worked the independent restart during the first 4 hours of use.

The response of the support was scarce: one chicken, a replacement unit will be sent when the device has arrived with the suspect memory. I did so. Replacement unit was then at 30.10. sent - by no means automatic, but only after a call to the Support: Sony's support here not covered themselves with glory!
At 31.10 it was it already there. From experience first time elected a 32GBμSDHC, these works currently. But the problems with hanging, I had already umpteen times.

So when it runs the sound is bombastic, my Sony Bluetooth Headset SBH 20 run, however miserable, the contact breaks off again, too bad (distance less than 1m).
Flac sound great, space-filling.
But mp3s please me the most trouble, always with the transferred MediaGo pieces run only briefly, only to force a restart of the player.
I can not believe that I could have a row get two mounting devices sent. I am only surprised it that no one else reported these problems.
Sche ... e I hear in passing with the NWZ A15 Queens A Night At The Opera MP3 transformed from my original, own CD, and this scrap Player is now the third time crashed and rebooted.
Although I still have almost 4 weeks to the testing, I am more and more convinced that the very next day requesting the re-return my call to Sony, and then only for money.
So I find it outrageous for as to require a garbage 199.-.
Maybe I did not use optimal Progis when converting my music into MP3s, but I never saw the message "Format Exception". And I also do not consider the DAC, I use explicitly MediaGo. So at what this overpriced technical piece is diseased garbage?

Addendum:
now I have two hours read original purchase CDs with MediaGo, and because MediaGo serving, this Lossless, Flac So read and transmitted, also high-quality Flacdemos be playing again. But the crash problem is at least 15x within one hour. Sure I play with players around, press play, stop, option info, pause, volume, silent - and every few minutes the player crashes. is particularly annoying, I always have to pair the Bluetooth earphone only new, must have access to the folder, select them and the title BÄMM poops the player again.
Whether mp3s with 192 kbit / s and 16-bit sample depth or Flac with VBR 2455 kbit / s and 24 bit Abtastiefe.
Sure, the few seconds between the sound is intoxicating.
Play entire albums without pressing any key, I tried, but after two titles was what?
Correctly: crash, restart!
Oh the above play with Bluetooth headset I had to again make 2x hardware reset.
My mind is made up: the second player also goes back. That thing belongs properly revised. And I'll stick with my old Sony: 585B, S545 and B173F. Although can not HiResAudio, no Bluetooth / NFC and have no memory expansion: But honestly my two NWZ A15B have that too somehow not!