I will be alot more cautious about what AK say in the future.  First, they say that copper chassis is the only difference.  Second, they say  AK380Cu only produced 500 units...  

  Provided this is a premium priced device I would suggest you send the photo to distributor and request for at least a replacement unit. 

      The cable is custom-built by my friend and the cable model is called "DHC Peptide Synergy"  I compare the DHC cable against Stock cable repeatedly by A-B tests, and by the end of second day I give up the stock cable...

I am aware that Wizard recommends the stock cable, but it is just so tempting to replace the cable to alter the sound to individual's preference.  Having said that, it is extremely difficult to find a good cable, at the moment I am using custom built Double Helix, welcome any comments.  I don't...

  Thank you very much for the review and I totally agree what the report says.  I bought K10U 4 months ago the first time when I listened to it.  And now I still find myself out-of-words when trying to describe K10U other then "Analytical and Musical".  Because it is exactly how wonderful it...

Hi Noble Teams,   I just bought my new K10U last week, and like other satisfied users, I signed up Head-Fi forum to say thank you.    I decided to buy K10U after about 20 minutes of audition on my LG G3 mobile phone.  Before that, I had no clue IEM could cost >$1.5K, nor I understand how in...