Thanks for the pictures and help ! I'm planning to sell it unfortunately, I think it was more of an impulse purchase.

http://ecx.images-amazon.com/images/I/51GJYOorf7L.jpg   Due to the design of the jack, I am unable to plug it in completely. The jack is working fine for my laptop though, not for the E07K. I am considering to get a 3.5mm to 3.5mm adapter but won't the sound quality be poor? Advices please? 

I'm sorry but won't it damage the headphone amplifier? 

Okay I think I've found the problem. Apparently it isn't really compatible with my Dt 990 jack. I have to push the jack further in to hear both sides. Is there anything else I can do?

Hi there,    I've bought the Fiio E07k recently and when I plug in my headphones while using with my computer, I am only able to hear sound from the left side of my headphones. I've already unticked the encoded formats but its still the same. Any advices?   Thanks!

Hey, thanks for the input ! Is the E17 a portable headphone amp though? I am considering the E12 but due to budget constraints, I am settling for the E11 at the moment, hence I'm wondering if there's a major difference between the two. For the issue on sound leakage, do the 990s leak that much...

Hi there,   I am looking for a pair of decent headphones within the budget of around $200 with a portable headphone amplifier. I would be using it to commute daily and also for part of my studies in audio engineering and recording studio . I listen to mostly punk rock, punk pop and rock and...