I returned a set of 400i last week after owning them for only 3 weeks. The plastic headband cracked where it connects to the cup (gymbal?). I was sad to see them go because I had completed the break in period and they were sounding great powered by my Topping NX4 (read my NX4 review here: http://mindhead1.postach.io/post/topping-nx4-review ).
I told myself I would give Hifiman a try again if another 4xx drop happened. Not even a week later and it’s here. Now the long wait until May 15.
kltp567I love it, but the only comparison is the AKG K553 Pro, which really isn't a fair comparison. I do feel the base is a bit weak, but I also haven't really invested in a decent amplification system. EQ adjustments have made up for it for now.
I told myself I would give Hifiman a try again if another 4xx drop happened. Not even a week later and it’s here. Now the long wait until May 15.