I've bought the Hifiman HM802 from Head-direct store on the 16th november 2014. I've then try using it once
and it was working well with my SD card of 64 gb. But now I cannot manage to make it work well, each time
I am starting my HM-802, it's written "Loading SD Card" and then it says "SD Card Error" and it won't read any file on the SD Card.
I have tried to read the same SD Card on my Computer and it was still working fine, there were still music files on it (.mp3, .FLAC, .wav),
then I have also tried to read another SD Card with music files on my HM802 and it gave me the same error "SD Card error".
So finally I only manage to use my Hifiman HM802 once (the first time I put my SD card in it)...
Please help me I don't understand why it is not working anymore.