Want To Ask

Guys, i got myself MDR-1ABT (BT stand for bluetooth) and from spec sheet it said support DSEE but then in Xperia Z3 audio setting it mention DSEE only avail when it connet to wired head/earphone. Does it mean MDR-1ABT DSEE only functional when it wired connected to the source?

LDAC out of question since it only for device post 2015 production.

Any sifuu/expert can ecplain this? thanx in advance