I just got this, and I heard the strange exaggerated highs sometimes with high gain. I did a quick unfair comparison with it driving my HD800's with my Oppo HA-1, and it clearly was outclassed. I don't think the Oppo drives it properly either, but I'm still searching on that end.
It's worked great with my iPad and computers. I can't get it to work with my note 2 which I was going to retire to be paired with this to be my portable gig. Plan ruined! I should have read through the thread first. I have Android 5.1 installed on it, and it works with my uDac that I actually quite enjoy but it looks strange connected to a smartphone. When I switch it to the DA-10, set at
USB, No Charge (tried charge too), Variable Output, Low Gain (tried high too)
it acted like it was connected, but it didn't make any noise even though the phone was playing. I have the DAC and audio routing enabled in the developer options as well as Boeffla sound.
Meanwhile I'm trying to either figure out how to play Hi Res files from my iPhone (hooking up with the lightning to USB cable I've read, but what software would I use for the playback? Maybe the free TEAC or Onkyo players? My iPhone is out of commission right now so I can't try.
So all in all, I'm please with this DAC. It's resolving and I feel has good performance across the frequencies except the highs where it could too peaky/scratchy for some. I don't really feel it's warm though? Maybe for a solid state affair it's warm (good thing), but it's not warm like a tube amp. Now if I can just figure out what my ideal setup would be. Good thing I did get 128GB with my iPhone. I also think like audionewbi this pairs great with my IE800s.