I do own the AKG for three months now and I was just curious if the Sony could level the AKG. The first two weeks I was pretty disappointed with the 872, but I needed some time and I had to adjust the headphones the right way, a little high on the head. Now it sounds like a dream and I do...

Is there someone who could really give a good comparison between the AKG and Sony?

Unfortunately you can't...

Here the same! No big issues anymore. Because I had also a lot of interruptions with the OPPO HA-2 with iOS9 I thought it was related to the OPPO. Back then I had a lot of issues with the cables and USB port of the device. Luckily enough it seems to be solved now.

Thanks a lot for this advice Beagle; the harshness of the treble disappeared and the sound was much better then before!

I have bought the HA-2 back in august 2015 and had exactly the same issues back then, together with the iPhone 6, than I do suffer now with the iPhone 7 and the HA-2 SE. So it can't be just a iOS 10 issue like you stated here. Back then I had the same dropouts as described oa by dennistdk...