Does anyone have any issues using this with an iPhone? I have a 6s+, and this thing is nearly impossible to use. I have mine set up with the Onkyo app and high res files using the genuine Apple camera connection kit. But it seems like this thing is at the hairy edge of the power draw Apple will allow for an unpowered device, and while I could plug it in and start playing, just touching the volume control on either device will cause the "Device is not compatible" error. Yes, I read the suggestions for the volume controls published on Indiegogo, but the problem is still there. I have not touched it since the third day I had it because it is just so frustrating to try to use in this situation. But, it is so close to the edge on the power draw, it would not surprise me at all if some units are fine, and others are like mine just due to a stack up of tolerances in the electronic components. I have been so disgusted that I have not even connected it to my Mac to see how it sounds. I bought it primarily for the iPhone because of the size, and it has failed me. I bought a Cozoy Astrapi about a week before this arrived, and it is a very similar device, and close to the same price point for the retail model, yet it functions flawlessly, and sounds awesome. I really wanted this to work, and was extremely disappointed within the first 5 minutes, which is not good.