Well there really isn't much to say that hasn't been said before about these headphones I feel. They do an amazing job of representing music in a cohesive and natural manner. I had have these for quite a while now and can honestly say that I have NOT found anything *genre* that they didn't do a respectable job with. I have be unable to find a specific fault with these cans aside from not having a huge amount of bass which, depending on your personal tastes, is not actually a con. 
 
Anyhow to make this super short I feel that they are the most natural and "together" sounding headphone I have ever heard. They do an unbelievable job of making you forget about the headphones and the gear so that you just listen to the music. I find myself not thinking about the sound or what could be better with it and just enjoying it. They do really need a decent amp to sound their best though, out of an ipod they are lacking for sure but pair them with a nice tube or solid state amp and you have cans that will shine.

The NuForce Icon uDAC2 is the first Dac I have ever owned and with that came some unsure expectations and uncertainty. My laptop is a relatively budget one with a noisy headphone out. When using sensitive earphones like my JH5's and CK10's the static and other noise being sent out was just too much. It ruined the quite parts of songs and was actually borderline uncomfortable. As a result I set out to find a relatively cheap DAC that would solve this problem. 
 
After a bunch of reading and research I settled on the uDac2 which I ordered from a local audio shop. The uDac2 seemed to be exactly what I was looking for, small, compact, transportable and would cut the hiss along with having good sound quality to boot.
 
I can tell you after owning the uDac2 for two days now that it delivers on every one of those things. It is build like a rock, one really solid piece of metal with a knob on the front that has a tiny, tiny footprint. Also, the thing is entirely USB powered which is perfect for a transportable set up. I threw the uDac2 and my laptop in my backpack along with my earphones and I'm set with all the music I could possibly want. 
 
On the topic of sound, the thing sounds great. Not only is it silent with even my JH5's plugged in but it also really "livens" the music up. The music I have been listening to the past few days has sounded more energetic, alive and realistic, from soundstage to bass and clarity it seems that all around everything has gotten a nice boost in quality. To put it simply, the music sounds clearer and cleaner with the uDac2 not really coloring or altering the sound signature in any particular way.
 
To sum all this up, for the price, $130, there really is no downfall I can see to the uDac2. It is an amazing piece of gear for a stellar price and I really can't think of a fault with it for $130. Maybe a more powerful amp would be nice when driving larger headphones and maybe it could have I few more outputs on the back but again for $130 I don't think it's fair to expect those things especially considering all you are already getting for that price.

Well what do I really need to say that the title doesn't? These IEM's are the best universals I have ever owned or listened to. They are the complete package for me, they fit great, isolate well, have a build quality higher than anything else I have ever owned and have sound to die for. They are the most enjoyable universals I have owned and I know from the minute I listened to the loaner pair I got from ljokerl last June that someday I would own them. I remember putting them in, playing a song and knowing that they were special, something that one day I would own, didn't know when or how but I would get them eventually.
 
I now own a pair of JH5's and those are more natural sounding and "fun" with a more cohesive sound as well as a custom fit. In these regards they do surpass the CK10's and overall I feel the JH5's are better however the CK10's are by no means slaughtered. They hold up quite respectably and I still pop them in every now and then just to experience that almost holographic soundstage again.