Also apt-x is required on both ends of the transmission. Most people don't know that.

Bluetooth is limited to 384k (Apt-X) and wi-fi naturally produces jitter.  Wires man.  I love wires!

Jonny Deluxe here... Twiddling with my new Dragonfly on the following devices:   Samsung Galaxy Tab Pro 10.1  (KitKat 4.4.2 < I think>) This tablet is running great, plug and play with the USB OTG and Dragonfly... no tweaking.... audio is global across the device.   HTC One M7 (Lollipop...

That's awesome.  I have a HTC One M7 (AT&T) that just got the OTA of Lollipop (5.0.2) today!  I can get my Dragonfly to work with PowerAmp and USBAudioPlayerPro (or whatever it's called) but I'm having issues with Pandora, Spotify etc.  I really want to get a subscription to Tidal going but...