FiiO E12 inverting the positioning of my audio?

[Yanoflies]

I've just realized that when I use my FiiO E12, the sound channels are inverted. Left comes from the right and right from the left.
 
Does my unit have an issue or is this something about the E12?
 
AD900X > FiiO E12 > Xonar DGX

 

[namaiki]

Have you checked your cables?

 

[Yanoflies]

So that was it.
 
With an other cable, it didn't happen.
 
Just made an order for an other cable on ebay. Thanks.