First, I consider myself an audiophile. I've done copious amounts of research in terms of everything about headphones and audio, and also being a DJ, I had to understand everything about it. With that being said, here is my rather long review of these:

These headphones are, without a doubt, very impressive monitor headphones for their current price point of $129.95 (I paid $149.95 though). The build quality is decent, perhaps mediocre, with all plastic, the 53mm drivers are entirely capable of recreating the immersion and soundstage in audio. I've heard numerous sounds in my music that I've never even heard with my old generic 40mm headphones (20Hz to 20KHz frequency response).

These are closed-dynamic type headphones, which means these will cut out a lot of ambient noise in the background. Some have mentioned that it doesn't do a good job at isolating sound, but I find these do just fine with my full tower case desktop sitting right next to me at the same level of my head. My GPU also produces a very loud coil whine, so these really help to eliminate that annoying sound.

Even though these weren't engineered for gaming, they actually perform quite well towards doing so. The combination of the frequency response, the sound isolation, and the copper-clad voice coils means you will hear everything in the game. However, this obviously lacks a microphone, but that is not why I took a star off. I'll explain why further down.

I do admit, I was expecting the bass on these cans to be a little stronger out-of-the-box, but I only had to make slight adjustments using SBX Pro Studio Equalizer (EQ). In addition, closed-dynamic headphones tend to be more bassy, so I suppose these are a rare exception to that. Don't take this as a con however, since the bass is incredibly punchy just like it should be, while at the same time, it is not too tinny or muddy. The bass is incredibly balanced as a result.

The mid frequency sounds decent, but nothing too outstanding worth mentioning. It sounds pretty flat around there, but some debate that the frequency response is more of a U shaped. I've seen a frequency response graph, assuming that it is accurate, it reveals that it is very flat mid frequency.

The treble on these are incredibly crispy, which is generally a good thing. However, at some points, I've had to mess with the EQ settings to decrease the 16KHz level by 1 decibel. This, however, could be the fact that our ears are sensitive to higher frequency, and seeing as how these can reproduce frequencies up to 35KHz, perhaps this could be taken as a bias comment. I wouldn't though, as I think the treble is decent enough for most. Combining the voice coils Audio-Technica (AT) used in these, it will compliment female vocals in audio.

Now, the 3D-wing support invented by AT is certainly interesting. In some ways, this system can literally make it so you cannot even feel the headphones on the top of your head. In other ways, these become loose for some, and may make things worse. I had to give the wing support a chance though, because at first, they were incredibly uncomfortable. After some adjustments to the positioning of where I put them on my head, they started to feel better. Some have been saying that the support system works great for people with large heads. I have a large head, and they feel pretty decent and don't feel like they will fall off anytime soon. Where the wings support the headphones is rather tight, so these aren't as weak as you may think. Also, the leather pads on these are way better than the generic / low-end / lo-fi headphones, as it feel extremely plushy around your ears. This really compensates for the massive 53mm driver inside, as they are massive.

Now, I took one star off on my review, because of the way the headphone support system is designed. It puts a lot of pressure to the sides of my ears in most cases. At first, this doesn't affect me at all when I stop using them for a long time (anywhere between 1 hour to 10 hours). But after non-stop usage for about 3 to 5 hours, they start to get pretty discomforting on my ears, to the point where I have to keep adjusting them over and over again to relieve the discomfort. I think this is partly due to the way my head is shaped. The system is great, but in the end, I think I'd prefer a simple head rest on the top that is large and padded. The absolute circle design of the headphones is also unfortunate for those with large ears (such as myself), as it does put some strain on them after continuous use. Wearing glasses with these also seems to cause comfort issues, as the headphones put pressure on the frames. However, this was easily solved by simply resting the glasses on top of the headphone pad. Doing this tremendously helped the discomfort, but may not be feasible for some people, due to obvious reasons.

The durability on the headphones themselves is definitely questionable, as if something breaks, the entire thing may want to fall apart. The fact that a lot of it is plastic is not too promising either, but if you take care to maintain these properly and you don't slam them anywhere, you won't have any issues. The guide that comes with these is also very helpful, as it gives you various tips and tricks to cleaning and maintaining your new pair of headphones.

Summary:
Regardless of that one seemingly major comfort flaw that could be unique to only me, these headphones are worth investing in for any usage scenario. They have great balanced sound throughout, the noise isolation is decent enough for most environments, the 53mm drivers are a huge plus, and the quality of the voice coils really enhances everything from sound quality to sound reproduction. These are for the high-fidelity headphone users looking to truly indulge in their high-quality music. I likely won't return them, because the pros outweigh the cons in my opinion.

Pros:
-53mm drivers allows for great frequency response
-Sound isolation / closed-back design
-Braided 3.5mm cable jack, very tough material on it
-High-quality CCAWs used (copper-clad aluminium wires)
-Intricate detail of sound throughout all frequencies
-Very flat frequency response
-The long 3m cable I guess
-Double Air Damping System
-Rather impressive soundstage for a closed-dynamic type

Cons:
-3D-Wing support system ear pressure discomfort
-Discomfort after long hours of usage ((from my testing, 3 - 5 hours) may vary for some consumers though)
-Low-impedance (hi-fi users tend to have an amplifier)
-Plastic construction
-No microphone

UPDATE: Dropped to 3 stars
Like others have reported, the head phone jack broke off :( I have since purchased the open back version of these and I will say I like the open backs a lot more. They are more comfortable, fit better, and have a wider soundscape.

This headset sounds beautiful. I listen to classical music frequently and am a fps gamer and the A700x is a real treat for my ears. So far I've only plugged it into my laptop's standard headphone jack and have yet to try it on my tricked out tower and the sound quality is still extraordinarily high. The A700x produces rich sound and allows the fine details of music to flow through. When I'm listening to classical music, I can hear the rubbing of a cello bow against the strings, the quick breath the musician makes, the press of a piano pedal. Its really quit immersive. While gaming, the A700x provide directional detail and a clear crisp soundscape.

I haven't encountered any of the cons people have mentioned. My headband does not squeak or make any noise. The headphones do not slide down and the fit is quite comfortable. People are correct when saying the headphones are mid bass however if you know anything about equalizers (see pic) you can adjust the frequencies to produce a robust deep bass, which in my point of view is just perfect. On my setup the A700x is innately loud. I have to keep my master volume down to about 25% or it feels like my ears will bleed.

My only cons: the cord is not detachable from the headset. It doesn't fold down or the ear-cups don't rotate a full 90 degrees making it not the best headset for travel.

But other than that the A700x is a winner in my book. For the gamers out there, I've tried many of the name brand gaming headsets in the $100-200 price bracket and they just don't compare in sound quality or soundscape to the A700x.

These headphones sound very "clinical" but they are overall very good! The bass sounds great, however i just wish there was more of it. Overall these headphones achieve a more balanced tone and do not color the audio source the high notes are very crisp without being harsh at all. These cans sound great for listening to classical music or jazz, watching tv or movies, these headphones sound perfect for classic rock and perfect for gaming you can hear footsteps well ambience/background music really pops and explosions sound totally real! . However with the less emphasis on bass tones if you listen to a lot of metal music or electronic or r&b/rap you may find the lack of bass a turn off and would probably be more satisfied with a different set of headphones.

The cord is cloth covered which is very pleasing aesthetically but it tangles up very easily. I could probably not touch the headphones at all and after 2 or three days the cord will likely be a tangled mess(slight exaggeration) the Wing design of the headband is very comfortable and feels very secure the clamping force on the ears is just right. I could headbang with these on and not fear them falling off. I listen to music with these headphones for several hours straight I have a very large head so your mileage may very on comfort. These headphones seal very well on your head I can absolutely blare my music and the outside world can not hear anything at all as long as the headphones are on my head. they block out outside noise you can still kinda make out what people are saying if you have them on and your music off.

Lastly, the impedance is higher than your standard set of headphones so listening to them on a mobile device may make them seem quieter. still at a reasonable volume at max volume plugged into my Iphone 6 but noticeably quieter compared to some cheaper headphones.