Dragonfly on Samsung Galaxy S5 most unstable
Dragonfly 1.2
Samsung Galaxy S5 with Android 4.4.2
Micro to USB OTG cable from Hama, both 2.0 and 3.0
Apps: TuneIn, Spotify, UAPP and various specialized radio and videocasts
IE Grado Gr10, Grado R1, Koss Porta Pro
Symptom: sometimes it works (very fine) but mostly the sound is 'broken' and low sounding, as from a tape played much slower than normal.
Sometimes it helps to restart the smartphone, but not always. Sometimes, 3-4 restarts (with Dragonfly plugge in or after restart) remain unsuccessfull.
Dragonfly works fine on workstation.
Keybord works fine wiht OTG cable on phone.
Notifications:
- pluging OTG cable into phone, short notification USB connected
- pluging keybord into OTG cable: steady notification keybord connected (small symbol in status line)
- pluging Dragonfly into OTG cable: no notification
- pluging Dragonfly and OTG cable together into phone: short notification USB connected
Color of the Dragonfly while connecting: green for half a second then magenta.
Just now, after so much pluging in and out, works just fine with all mentioned apps, although the Dragonfly does still not appear in the notification bar. Success is just unpredictalbe and happens too seldom...
My hypothesis: the Dragonfly recognizes the GS5 as 24/92 capable and expects upsampled files, which the phone does not always deliver.
My expectation: that the Dragonfly waits for the file to settle to a standard (and internal clock). A configuration menu for the phone output would aslo introduce some flexibility.
Does somebody have an idea, how I could increase chances that the setup works as soon as I plug the DAC into the phone?
Reto
P.S. Reading this forum was already very helpful. Thanks to all.