Its a still a hit or miss thing...I think. There are some DACs that smartphone can communicate directly using the Android sound layer. Only IME, limited upto 24/192. Non need for UAPP, Hiby or Onkyo HF PLayer. Example of this is my GO1000 + Note 10.1 (2014 Ed). Using it as my media player on the go. In here playing a video file I got from youtube using MX PLayer Pro.