Quote:
Originally Posted by lucianopacheco 
I live in Brazil and took advantage of the fact that a friend was going to spend a few days in the US and asked him to bring a unit of HE-400 for me. I ordered and had it delivered to him, no problem.
Yesterday, I got the headphone and was very excited to test it. To my big disappointment, the left ear channel stoped working after 5 minutes. Then it was on and off, cutting out the sound for a couple minutes. I though the cable was not properly connected, or something.. switched cables and the problem persisted. I then discovered that if I pressed it against my head, the sound came back.
I turned it off, took of the earpads, tightened the screws I saw and the sound came back again.
I remember I had read something a while back about this issue, but though it was a "1st batch" related issue. I believed that having passed almost a year, Hifiman would have this problem figured out by now. I was really sad to discover otherwise.
So, I emailed them and am waiting for their feedback.
So, I emailed them and am waiting for their feedback.
I don´t want to ship it back to China and be a month without it, since it´s the only headphone I have.
Everything that comes from another country goes through customs here, and it stays there for weeks.
Anybody who have recently bought one has had the same issue? How it was resolved?
Thanks
Luciano.
I am also getting this problem with my HE-400, with the right channel stop working sometimes. This one was from a replacement of another HE-400 that had a lesser problem with the right channel. 
To make sure is this the revision 3.5 / revision 2?
Will see if test headphone for a while then will contact Hifiman if the problem still exist.
Edited by wredj10 - 10/29/12 at 11:13pm
