GiullianSN
Headphoneus Supremus
Sad...As additional info, @Barra, this @ddHiFi DJ30A adapter is not intended to convert 3.5mm SE to 4.4mm BAL. It connects L/R/GND of 3.5mm TRS to L+/R+/GND of 4.4mm TRRRS. For example, Cayin E02 card for N6ii only has 4.4mm HO/LO output, and with this adapter you can also connect 3.5mm terminated headphones or LO of amp to use in "single ended" mode. Pretty much, you are tapping into single ended side of a balanced connector.
BUT, it only works if 4.4mm TRRRS Pentaconn socket of your DAP has GND connected, and apparently Sony DAPs don't have it connected, thus it does not work with their DAPs.
But wasn't Sony the main pusher for the Pentaconn and they didn't use it's full potential? Sad again...