Question strange problem with an in ear earphone

[djsolidsnake86]

i have a pair of xiaomi mi noise cancelling earphone (3.5mm jack)
i want use this on my headphone amp (audio gd nfb 11.28)
i also have 6.3mm to 3.5mm adapter from a akg 371, the problem is that with this adapter i hear half sound on the xiaomi earphone (i also have another xiaomi earphones and same thing), and if connect to microusb the anc adapter i hear full sound, but with a background rustle.
i don't understand if the problem is an incompatibility wity my amp, or the adapter is the problem
what do you think?

 

[Nephern]

Try turning the input jack

 

[djsolidsnake86]

Try turning the input jack

same problem!

 

[Nephern]

Maybe its the jack itself.

also could be a ground issue with a bad ground wire running to your house.

the adapter could be cheap.

 

[djsolidsnake86]

Maybe its the jack itself.

also could be a ground issue with a bad ground wire running to your house.

the adapter could be cheap.

the adapter is the original from akg, is screw type but the xiaomi jack enter completely

 

[djsolidsnake86]

i found that the problem could be the fact that xiaomi jack is trss (it has a microphone)
so wich adaptor will work?