@Clemmaster , @TBMY I have never been able to make zen stream playback DSD256 files using native mobile app. Can't tell you how it works with Roon since I have never used it that way. The zen stream thread on head-fi is full of reports of unstable software and constat stream of bugs in basic functionality. My is running some old beta version of firmware as former ifi dealer told me to better stick with firmware that works for you. Glad to hear other users had a different expirence. Oh one more thing, ifi acknowledge some time ago that the magic knob at the back of zen stream really does nothing.
P.S.: WLS has null problem with DSD files playback including DSD256.
P.S.: WLS has null problem with DSD files playback including DSD256.