I know very little about radio waves bur there has also been speculation that the walls help the BT by bouncing off them and another thing could be that you get a lot of new radio signals when walking out of radio shadowm between walls. And then it could be traffic lights. Some radion wave...

  Most likely BT. I was also wondering if it was ANC or BT at first and did some testing and it became quite obvious that it was BT. In my case walking in a city and and at every time I crossed a road I got severe stuttering.   I got my pair of Sennheisers back today and they couldn´t find...

To begin with they work fine indoors even through walls and when on the subway on my way to work. I noticed the stuttering, and it is really not just a stutter but severe disturbance, when passing intersections in the city, every time I went across an intersection then it was impossible to...

I posted way back in this thread that I had returned my Sennheisers for service, and well 5(!) weeks later they are still on service. I had them for 1.5 days and had those annoying stuttering issues that seems to be quite common.    Anyway, have anyone who has had the problems had some...

I can only answer for myself and I was mainly using my Samsung Note 4, but I have access to several phones I tested with at work and could easily reproduce the problem I had with BT with iPhone 6 and also with some random Sony phone I tested.   Mine are on service though and I guess I´ll have...

2 days, I got them on the 10:th of mars and they got sent for service yesterday.

I would saythe problem has nothing to do with the cups, not really sure they are metal. My headphones went for service today I'll hopefully get a working pair back in 2-5 weeks and experience this far has been far from premium.   Anyway, when in the store the sales guy tested them, walked away...

I have read the entire thread closely now and it seems like people are having problems similar to mine regardless of device. But I saw that people suspected and this was mainly a problem on iPhones, but not for me. I used my Samsung Note 4 and tried with both Android 4.4.4 and 5.0.1.   I...

I have exactly the same problem and did some testing walking around the block to figure out if there was anything I could do to get them to work properly.   What I found out was that did work way more reliably when I put them in the upper right pocket in my coat, but when in the left pocket in...

I just experienced the very same problem with the headphones breaking at the same spot. I just contacted my local AKG support and hopefully they will replace them, but from Reading up on the web I do not really have high hopes that they will last for long.   I really liked the sound of them...