I had a bad experience with Practical Devices too. Love my Fiio X5-III , unfortunately the screen is starting to crack (should've bought another when I found it for $300). Recently retired and disposable income took a big hit. I'm in the process of putting together an AMD Threadripper (1950X)...

I'm still waiting for Hunters and Atlas/Delta. My experience has been so frustrating that I pretty much gave up on audio products. Only come here once or twice every few months to read a few posts before I get upset and move on.

  Memory cards aren't meant for long term storage. I've had problems getting data off cards I've let sit for a year or more.

  I have 2 of those - $78right now at B&H and Newegg. Minimum write speeds for class 10 and U1 is 10MB/s. U3 (V30) is 30 MB/s, V60 and V90 are 60MB/s and 90 MB/s. I think I might've seen write speeds near 20 MB/s a few times - mainly when using USB3 card reader.

  I'm in a "they'll get here when they get here" mood right now. Waiting for Atlas Delta (10 pounds off), Hunter (20% off), Icarus 3 (100 pounds off), and balanced cable (full price). The worst preorder for me 2 years in June (Bards Tale IV).

  Using firmware 1.1.4, it doesn't happen all the time - as a matter of fact, it never happens when I'm trying to make it happen; except for when I'd get the low battery notification. Haven't tried other headphones yet, have to see if I can find the other cable for my SE535. For playlists...

It's the opposite for me - only sees sd1. It does play from both slots though via playlist created with Foobar2000 on computer.

I'm getting weird behavior when using an in-line remote - The earbuds that come with the FiiO M3. I got an error code once, but didn't write it down. Today, I paused for a minute or two and there was no sound when playing again. I turned the screen on and I could see it switching between play...

 It isn't idiot proof. I know because this idiot tried putting the tray in with the card on the wrong side about 6 times. I even looked at the pictures.

  x86 is Intel(AMD) architecture and mips is MIPS https://en.wikipedia.org/wiki/X86 https://en.wikipedia.org/wiki/MIPS_instruction_set

  I had it going from 1.1.1 to 1.1.2 . No problems with 1.1.3. Haven't had much time to listen yet, finally got playlists to work (put playlist file on internal storage).