I looked for the threads to provide link in here, I will be honest. I couldn't find them. Either the name changed or removed or something happened (I am not really good at understanding how things work in forums like that, that's the only forum I join and use). So that part, I am sorry I won't be able to show what I seen long time ago (back in times that I was probably only a lurker, not even posting in here).
I saw a thread that some users were saying their build quality is very questionable for their price. I believe he was talking about JH16 but if it is pre-FP or after, I can't quite remember. He was not alone either, people supported him. Apparently when I stop reading the thread some other things happened.
If my memory and non-native English fail me, the title was something like that: JHA Disappreciation Thread.
Now that I should mention, I am a ciem lover and will get probably only ciems instead of universals or headphones. Therefore JHA was in my range before buying my first customs. However all those things I read pushed me away. Now, I just read and observe other people's story, hoping that maybe one day I will see only nice things and become their customer. I am not a hater or fanboy, as I said earlier, I just write what I saw in here long time ago.