doxyq3 wroteI had the same problem with my Dragonfly MK1.
This may sound like I'm over simplistic, but when you
opened Alsamixer and selected Dragonfly...did you run
the L&R volume settings all the way up?
(mine was set to dragonfly but the dragonfly was set
to mute - volumes down - as a default when last used in Windows).
Thank for sharing experience. As above mentioned, I got test sound but playing only a click pop out then no sound.
Anyway, this little damn dragonfly liked my Nexus 7 and that may be Ok.