There is nothing new added that is even somehow interesting for me, execpt the 16GB in a small package. the camera is a useless add-on to me, since I dont buy an Ipod to record clips, even though the clips are really sharp.
 
It lacks features like custom EQ and FLAC support (again, even though you can Rockbox it), and the sound quality is not that good. I can hear a small amount of static when I change the volume, which I dont have with anything else.
 
good things are the 16GB space, the User-Interface is still as always easy and user friendly. Same can be said about the Design. It feels sturdy but still not as sturdy as the 3rd generation 4GB.
 
 
Dont get me wrong it may sound very negative but I dont mean it like that. Everthing good from the previous models is in it. Its just nothing new that interesting except a 16GB space.

Value
 
The Value is really good, you get exactly what you paid for. Now there not for sale anymore so only available second hand.
 
Audio Quality
 
SQ is okay, nothing wrong it. but since the small space and the lack of features it isnt fit for anything higher then 320Kbps
 
Design
 
Design is everything you'd expect from Apple. Perfect nothing wrong with it, Dropped it multiple times it never let me down.
 
Battery
 
The battery was also good. I could spend about 5 days without recharging. Only music, no photos or videos.
 
User Interface
 
Really simple, it works how you want it to work.

Hello HeadFi, this is my first review so I thought I will begin with some overall normal IEM's, that for me started my audio addiction
 
My first experience when I first bought this is that it was pretty good. They come with alot of accessories that has enough options for everyone. The case where it comes in is pretty strong, I still got a mark on my hands of the scissors. The cable feels sturdy and the Y split is not to long or too short. But because of how the cable is connected on the monitors, it is not comfortable for over-the-ear use.

 
So the first time I putted it in my Ipod it was okay, Not like WOW-jaw-dropping good, but then I was not expecting that when I bought it. Bass was overwhelming and there high notes were sharp and kind of out of place. So after my 200+ hours burn-in I started to like the CX400 II more and more everday. But after 7 months it became boring.
 
High's are still abit sharp and not very clear, Bass/Mids are good. Bass can be a bit overwhelming at times but it sounds controlled. Like Xstream said before me, it may needs some tweaking to get it right for you're own personall taste. You can definetly feel that you have IEM's in, so it feels that the earphones involves with the music.
The best part about these earphones are the noice cancellation. It is so good that when I go to the bathroom I cant even hear the toilet flush. (Too much info..?) Perfect for noisy environments like cities, train stops, or a bathroom... etc. You may want to test diffrent tips first. I used the Dual flang medium size tips to give the best noise cancellation, it may be a bit too bassy for other people, just see which ones you like.
 
The price i paid for it was €64 which comes to about $82. It was because i purchased it 1 day after the release of these earphones, now they are alot cheaper.
 
I can recommand this to people who need more then the usuall sound the $5-35 buds give them, or people who just wants to enjoy their music in busy environments and don't want to spend a awful lot on high-end IEM. For me, these earphones gave me a really good experience and it made my passion for sound quality grow alot. They are a perfect step-in model for people who want to take it a step higher.
 
I hope I helped, if you have any questions or suggestions about this review. Just PM me