I use the Directstream junior with Audirvana (wifi connection). My source is Qobuz.
I have a very annoying issue when I try to switch from one song to another with Audirvana (but it’s the same issue with my phone, when I use Bubble UPNP apps): pushing play one time doesn’t change the song but launch from the beginning the song you were listening initially. Pushing play a second time just stop the song.
I have also another issue with the volume control doesn’t work neither (in audirvana). Sometimes, it’s very strange, the DAC volume is modified like 5 seconds later.
I do think that the issue comes from the DAC as when I use a headset connected to my pc, I don’t have any of these issues.