Thanks Cholero for the reference ! For the lineout, as I tested it with my Shure Headphone ... I get the same result   For me, what it's strange, it's why my Shure jack is thicker than others ...   Guillaume.

Hello all,   I fixed it ^^   I disassemble the DX50 and test the jack connector between the headphone and the solder on the DX50. There was no contact on a pin, so, with a little screwdriver, I move the internal connector and It works now.   Obviously my Shure jack connector is smaller...

Hello Ceemsc,   Thanks for your reply !   I'm sorry but I don't have any compatible device to test the digital out :(   Guillaume.

Hello,   I have a stock DX50 for 3 years, but since last week, I didn’t get any sound on the right channel.   I have this issue for the phone out and line out. So, I assume it’s not jack connectors (I also try my headphone on an other DAC without any problem).   I did not find any thread...