USA Order: Just got my Hidition NT6 Pro's
I just got my Hidition NT6 Pro's delivered to the US yesterday on 6/15/13 . I ordered them on 5/30/13, so the whole order only took two weeks to receive. However, it seemed so much longer given my impatience, the time required to research and decide on this CIEM, and the time to schedule and get my ear impressions made as well as to ship them to South Korea. The good news for US buyers is that I had no customs charges or shipment delays.
My initial thoughts are that they sound really great, but I am still trying to get my head wrapped around the sound signature. They make my TF10s sound like I am listening to a cheap mono AM radio. However, there are some oddities in a few songs that I am still trying to figure out. Most of the songs I have listened to sound great like I am listening to my Audeze LCD 2 v2 or a very expensive HIFI sound system. Yet a few other songs sound confused or just plain odd. Overall, at this early stage, I have no regrets or buyers remorse - I really love what I am hearing.
The most obvious oddity is the cliff in the bass. In a few songs it sounds as if the bass is crossed using a pair of $5000 hi end 18" subwoofers paired with a single mediocre 8" woofer for midbass. To be fair, this isn't often and I have not given them or my brain any time to burn in yet. The bass isn't as big as I expected or hoped, but I am mainly listening to my clip+ which is know for clarity, narrow sound stage, and a sharp drop off in sub base. Yet, I should say that the bass is more than awesome when it kicks in which gives the sound signature much of its richness beyond the clarity.
Forgetting the perceived hole in the midbass, everything is tight, transparent, precise, intimate, and coherent the rest of the way up. I have large Magneplanar's for my main speakers which is the closest comparison I can make. They sound very transparent, full sized, 3D, with superb resonance that you can feel in your bones. Although I understand why average_joe says that they are bright, they are not grating as I had feared. I think they are better described as full sized and extended. Instead of making everything sound like a sprinkler system, or symbols sounding like finger symbols played by a miniaturized person in another room - treble sounds full sized and natural.
As average_joe pointed out, they sound extraordinarily clear and coherent with a good sized 3D sound stage. The presentation is very up close and intimate with everything sounding proportional and on the same moderate sized stage.
My sources only include the iPhone 5 and iPod Classic with similar muddy and confused sound signatures and the Zip, Clip+, and Fuse all sharing the same clear sound signature. Although the NT6 Pro makes both sets of signatures sound great, Average_joe was correct in his assessment of the iPhone vs. clip+, the clip+ sounds much better (clearer and 3D). My Colorfly C3/C&C BH2 setup is still being shipped so I have not had a chance to hear them yet. My hopes are that the Colorfly C3 with the C&C BH2 will retain or improve on the Clip+ clarity while better supporting the NT6 Pro's bass capabilities.
I will report back once I get used to the sound signature and have more of a chance to play around with it.