Mine is from 11.2013 and I'm still using it. I was never able to achieve 10 hours, even when new, now I'm down to 2-3 hours - it was used only lightly. Any idea where to get a new good quality battery? From FiiO support I got this answer: "According to customs policy, the battery is not...

Yes, I'm running Windows 10. There is only the (ASIO) driver from 14.01.2015, which I already have. The distortion appears after several hours of playback. I don't think it's overheating, because a brief on/off switch fixes it for another several hours. Any recommended buffer/latency settings?

And what about the firmware?

I've never done a firmware update, I didn't even know there is a firmware in the E10K. Are sure it's firmware and not drivers? I have a similar problem with it as sidi0us has. After some time of continuous playback I get distortion, which gets worse if I let it play further. The only working...

There is a firmware update for the FiiO E10K? What does it fix. How do I determine which version of firmware I actually have?

I do, daily on my way to/from work.

Thank you for your interest.   No, sadly I didn't.   I rip to a single file with a cue sheet. I don't think there is anything wrong with my rips. They play without a problem on a PC (Foobar) and on my Rockboxed iRiver H-140 and H-10. When I verify the rips in CUETools, they are accurate...

Yes, Rockbox - I love it! I'm using it in dual boot on the H140 and H10. FiiO (and others) could learn a lot from Rockbox :-)

@TheGiantHogweed that's exactly, what I mean. I've deleted the cue sheet files to get rid of the gaps (no big deal, I listen mostly to whole albums), which means I have an album long "tracks", which means I have to use track position memory. Now I want to know what album I'm listening to and...

The most annoying (for me) is this bug - when playing FLACs with a cue sheet (the whole album as one file, tracks defined by the cue sheet) I get gaps between the tracks, not always but very often. That's very disturbing! More details are here...

Sorry, but I don't share you opinion on this.

IMHO it's not how long, what's important but if there are any bugs left in the final version ...

You could try the FiiO ASIO driver: https://www.dropbox.com/s/dd0uda7g9inz6bk/FiiO%20E10K%20ASIO%20Driver.zip?dl=0

That looks as if your card is dying ... You can try fsck.vfat or dosfsck under Linux.

It does look like a corrupt filesystem (or card). Have you tried to run chkdsk on the filesystem (in Windows)? You can check the card with H2TestW. AFAIK should be FAT32 or exFAT, NTFS is not supported

Good idea. Thank you. I'll try it.

I'm using firmware 3.4 There are bars.

Does anybody know how to "recalibrate" the battery indicator. Mine shows cca 30% capacity left, when in fact the battery is flat ...

It's a shame FiiO left a lot of bugs in the X3 and wont fix them ...

I have to say I'm very disappointed with the final firmware. When you look at the change log between the latest beta and the final version - not much done in 6 months, considering it's the FINAL version - that's really sad ...

I'm using a RiDATA Class 10 16GB and a Kingston Class 4 16GB card for testing. I can try my Transcend Class 10 UHS1 64GB card if it makes a difference.   I noticed the problem first, when listening continuously, then when testing I was FF-ing to the end of each track and listening for the...

I've already tried to convert the file to wav, ape, mp3 - didn't help :-(   PS: Just a theory - for me it looks like reading the info of the next track is too CPU intensive and it creates a gap because the CPU isn't able to continue decoding the track. On the second play, the info is cached...

Here you go: http://ulozto.net/x2YUbXRs/gapless-zip   Tracks: 1-2-3-4-5-6-7x8x9x-10x11x-12x13x-14x15x16x-17x-18x19   - "no gap" x- small gap x gap

I did some more test around my problem with gaps between tracks in albums ripped in one FLAC file + CUE sheet. I'm pretty desperate as I thought ripping my CDs in one file with a CUE sheet circumvents eventual gapless playback problems.   Gapless setting (on/off) doesn't matter.   INDEX 00...

I'll try that. But even when it works, it's not really a solution.     I've got an idea, maybe it has something to do with index0 in the cue sheets. I'll look into it ...