I'm very interested to see what that's like as well. Hmm, they say they've found a way to mass produce the plan as but still sound good. If the HE-400 wasn't mass produced, wouldn't it cost a lot more? I hope it outperforms it's price point, but I'll be sure to test it out to the max.
While that may be true I find that all of the Hifiman cans that I have heard have been priced quite aggressively when compared to the competition but I guess I'll have to wait for some impressions at CES and hopefully get some insight on it then. I do like the HE300 and HE500 and was thinking about getting the HE4 again but I'll have to see how these pan out.