Lightbulb [Q][USB DAC / USB Audio]

Hi Guys!

Sorry for posting a new topic but i went through on the google finds and I didn't find my answer.
I got my Xperia Z today, it has the latest official 4.3 on it.

I would like to use my Audioquest Dragonfly DAC with it and I now that it is possible, because I saw that. I simply connect the DAC via USB OTG and it lights up, looks like the phone recognize it because there is no sound at the external speakers, but sound neither comes out from the DAC.

It worked under Sony Xperia S with USB Audio Player, but it isn't here.

It is really important for me, please help.