Amazon.com: Customer reviews: COWIN E7 Active Noise Cancelling Headphones Bluetooth Headphones with Microphone Deep Bass Wireless Headphones Over Ear, Comfortable Protein Earpads, 30 Hours Playtime for Travel/Work, Black
I've had these headphones for a little while now and there are some pros, quite a few things I label as cons.
the sound is pretty decent with some good bass but don't expect to go deaf cranking up the volume with these on. Don't get me wrong they sound good but I can turn the volume up and sometimes I would have just liked a little more.
Apparently the person next to me can hear the music just fine when I'm listening with these on. If I have the volume more than halfway my wife can almost tell me what song I'm listening to from halfway across the room.
These say noise cancelling but when the headphones are switched into noise cancelling mode (off - on - NC) all the difference I notice is that the bass is turned off. Literally when I switch from on to NC the bass goes away.
I'm torn on this one. Everything feels real nice until you press the three buttons. Do you remember the buttons on the portable disc-mans a long time ago? The buttons kind of move when you wiggle them, they click like cheap plastic on plastic? Same here. All three buttons are one triangle and the three points have different functions. When you have the headphones on and you press any of them you feel the kind of cheap feeling click in your ear. But this is just nit picking. The headphones, on the whole, feel great, have a good weight, and the muffs are comfortable on the ears. It is extremely well padded around the top of the head.
Holy fk! I've never seen a pair of bt headphones perform this well this long. I'm used to the old days, before I became enlightened, where I listened to music through my earbuds until the evening when they'd beep and flash red and I had to plug then in. These things, though? Days. Days and days. I've never had them die on me once. I go about four days or more if I hadn't used them more than three hours per day for a while. I've never seen this performance length before, I'm quite impressed. Bonus marks for this.
Keeping in mind the sound, the volume strength, the NC feature, material, craftsmanship, and battery life, these amount to great headphones in the price range but I don't think I'm here to grade on a curve. These are good headphones compared to $250 but not great, not exactly comparable. But also they don't compare to the $15 ones you'll find at Dollar General either. Compared from $15 (1 star) - $250 (5 stars) they rank a two 1/2. They outperform $15 one but aren't quite to the levels of $250 headphones.
I've reviewed these headphones as best as I could and in being honest with my full opinion. Please read other reviews and use this review as mainly a guide in what questions you could want to get answered by others.
I received a second pair of these from the seller ("if you take down your low review we will send you an updated pair", they sent the same pair) and after trying them im still of the same opinion. Good but not great, all told below average.
- Do not buy them if you're expecting to be serious about active noise cancelling - Do not by them unless you are okay with ANOTHER thing to recharge in order to be usable (NO passive audio)
I am spoiled by BOSE QuietComfort 25 .. So I'm using that as my 5 baseline benchmark out of 5:
SUMMARY - Sound quality  - Noise cancelling  (the earcups are pretty good just by themselves) - Cost to value  - Head wearing comfort  - Features / operation 
PROS - Super nice packaging - Slick design - Very comforatble - Good weight, the earcups keep a decent amount of ambient noise out - Comes with rechargable battery preinstalled - Pairing is straightforward and easy - Sound quality is great - And then suddenly ...
CONS - With active noise cancelling activated just completely removes any hope for bass response that you had - It is as if it is cancelling the ambient sound noise bleed through out of the earcup itself! - With active noise cancelling active, you can hear a constant HISS that LOUDER than NOT having it on [Old Cassette tape hiss] - With active noise cancelling on, if you wiggle the side (which you will do because of all the controls) it does a very strange thing and cuts out and jumbles the audio signal for a moment - To use them you have to have them CONSTANTLY in the ON position, thus zapping your brain with bluetooth radiation [which makes me want to take them off] - They include a 1/8" adapter, however you can't use them as standard pass-through headphones [OFF MEANS OFF!] - To turn UP the volume, the button is on the BOTTOM, and turning DOWN is on the TOP - very counter intuitive control - The chrome gets "fingerprinty" SUPER fast and looks gnarly (maybe I just have gnarly oily hands?) - The included cable is MAYBE only 2 1/2 feet?
Got these headphones for Christmas over a year ago. They work great, cancel noise pretty well, and feel very comfortable. Plus, it has a nice long battery life, and charges relatively quickly. However, only after a few months, the right ear started to come loose. The plastic inside had just worn out. I tried to deal with it, but it couldn't even stay on my ear. Not long after, I decided to give them another chance, and I bought another pair. That was a mistake. The exact same thing happened (this time on the left ear), and it broke even quicker than the last ones. They weren't mishandled. I was just walking and the left ear popped out. Such a shame that good headphones are made with such cheap plastic. Don't buy this if you're looking for headphones that will last more than a couple of months.
I consider myself an audiophile based on my past experience (I'm 65 yrs) and my vast knowledge of recorded music and the artists that create the music. I have heard and own some of the best recorded music ever produced and I am privileged to own premier playback equipment. I'm always looking for technological advances and improvements in playback equipment such as headphones. Based on the incredible reviews these Cowin E7's received on Amazon I thought it would be advantageous for me, especially in this low price range to see what all the hype was about, so I ordered them. After unboxing and putting these low priced headphones through a series of audio tests that I run on all my equipment testing high, midrange, and bass output; testing ambience, fidelity, spatial and pitch parameters, etc, I quickly came to the conclusion that the good reviews of Cowin's E7's were either fake or contrived. These cans are BASS of mostly BASS with a muddy almost monophonic output. There was absolutely no midrange audio and only slight treble. My Sony MDR-7506 Dynamic Professional Studio, corded only headphones (on Amazon at $115.99) are what I test an rate all headphones against. To my ears and experience they are as near to perfect and balanced as anything could be. These low priced Cowin E7's are typical of headphones in this price range and have no measurable fidelity; and the noise cancelling is also very poor, but then when it comes to audio equipment and my years of experience I can state "you always get what you pay for" and I didn't pay much so I did not expect much and I did not get much. Mr. Cowin, you've got to know that this is a true evaluation of the E7's and I don't quite understand why so many, if even real, evaluations praise these cans online as they are not as good as portrayed on Amazon. I sent mine back.
I am not going into a lot of detail as so many of the other reviews have. They do seem to be very well built. I have not been able to try the noise cancelling in a noisy environment, so no comment on that. I am disappointed. To me, the number one reason to buy headphones is for an increased quality of sound over other in-ear or speaker options. My biggest complaint is the low-fi quality of sound. It is not very dynamic, kind of muffled and dull. Music has no sparkle or separation. In other words, instruments and voice, which occupy different frequencies within the sound curve, are all reduced to the same lower frequency within the sound curve. Based on the reviews, I expected the sound quality to be better than it is. I went into my iPhone music settings and tried to increase the treble, or decrease the bass, but it didn't have any effect on the headphones. I tried them on iMac and the sound quality was no different from my iPhone. The sound quality is not as good as my $5.00 imitation, wired earbuds, nor my inexpensive Bluetooth earbuds. If you are looking for a good quality of sound, look elsewhere.
I researched all the review sites, I read all the Amazon reviews. I've tried a few different models. I'm looking specifically for diverse headphones that don't sacrifice clarity for bass. I thought I could expect a good result from these, as Cowin seems to have a good rapport. First, I'll give the good. PROS: comfortable, wide ear cups. They sat quite naturally over my ears. The low bass notes punch through pretty well. They look stylish. CONS: Cheap, crappy build. The headband is kid toy-level plastic painted silver. Feels like it won't take much. The interface is annoying; slide the on button slightly too much and you might turn to NTC or OFF. For the sound quality, the treble is horrible, the mids are under average. The only good sound quality is the low bass tones, which are stronger than any other similarly-priced models I tried. But the overall sound quality is muddy, muffled and pushed behind the blanketing low tones. These are only good for bass-drenched music, and cannot be used across genres. Finally, if you're at all serious about the ANC, you need to upgrade to a higher price level. I can tell you after trying headphones in this price range, the ANC technology just isn't there. It cuts out low tones, but you can hear the noise just the same. It also ruins your sound quality. CONLUSION: With the cheap build and underperforming sound, I almost immediately knew I would be returning these. If you just want a pair of headphones with good low bass, these may work for you. If you're a discerning listener, look elsewhere.
The Con: They are hot and your ears will sweat. They are not noise-cancelling. I still hear every single word coming from the television while my husband watches TV. Purchased them in early June. It is now mid-November, not yet 6 months, and they are falling apart. One ear piece keeps dangling; I keep pushing it back in, yet it continues to react to gravity and begin to dangle. The Pro: They are comfortable on the ears, if hot. The are easy to pair and remain connected. They hold a charge reasonably well. Conclusion: Granted, I paid only $62.99 compared to those available for hundreds of dollars but that $62.99 is pretty pricey for me. I'd say that averaging at a cost of $12.60 a month is wasteful. Didn't even get a full six months out of them. Don't buy. (And, no, I did not contact the company. Perhaps I ought, but I won't. I'll just look for a different pair.)
These are not comfortable on my head. Very tight in general fit wise. The ear muffs are smaller than my ears so my ears do not fit comfortablely inside the muffs.
Sound qaulitly for playback (like listening to music or incoming call qaulity is really good. Surprisingly good bass.
The mic is very very sensitive so everyone I talk to (phone calls etc) complains of a wierd waterfall (like constant rush of sound) effect from the mic. To the point where some people aske nicely not to call them from this headset. I cut foam from a wind/pop gaurd and jammed it into the mic port. It helped some but people I call still have issues.
The design for the buttons is not intuitive. The on switch is a slide toggle that is hard to locate if you are wearing them. I almost always have to take them off and look for the switch to turn them on. I have yet to figure out the other controls as they are a bit wonky too.
Sound canceling just adds white noise and almost always makes my ears feel like they need to pop when I turn it on. So odd. To the credit of the construction the ear pads are pretty quite when I can get my whole ear into the muffs. I typically use these when driving so playback is not disturbed by ambient road/driving sounds.
If I didn't miss the return date (I really wanted to give these a chance, u would return them. They are really only good for listening to music. Not great for calls.
Two stars because wow, comfortable: Light, soft, well balanced. ONLY two stars because the first pair I received, I charged them up and turned on the Noise Cancellation (NC) mode, it was beautifully silent until I moved my head - and then I got bursts of white noise in my right headphone.
So, I'm returning these, giving it one more go - again, they are comfortable, and seem to work well, and are inexpensive enough that I wouldn't mind wearing them out in my garden or travelling with them.
(Also, when I opened the box I thought it looked like the pair I received might not have been new (there were odd smudges on the hard plastic parts of the headphones) but I had wanted to give them the benefit of the doubt.)
UPDATE May 15, 2018: Second pair received, unfortunately these were non-functional as well. Worse than the first pair. The static/white noise was present in both headphone speakers, not just the right - usually upon movement or any sort of touch or pressure. Sounded like there was a wire loose in both headphones.
I am sad, because the material is comfy and the unit is light, but the quality control for this run of headphones was just sorely lacking. I MIGHT be willing to give them one more shot because affordable comfort matters, but for now my review stands at 2 stars.
Also, the customer service/returns process has been painless and pleasant. I'm pulling for this company to get their QA together.
I bought this product *mainly* for the "active" noise cancelling feature. Unfortunately, the product doesn't measure up in this category. If you're looking for decent bluetooth headphones with moderate *passive* noise cancelling, this might be a good purchase for you. Not for me. 3M Peltor X5A earmuffs (www.amazon.com/gp/product/B00CPCHBCQ) that I bought 5 years ago - that use only PASSIVE noise cancellation technology - work much better to block noise than this Cowin product. To make sure that some active noise cancelling technology actually does measure up, I went to Best Buy and tried several headphones with this feature... All the ones I tried (yes, costing at least 3 times more) outperformed the Cowin in this category. Admittedly, some of the products at Best Buy - e.g., Skull Candy - just barely outperformed the Cowin headphones. In fact, only one set of active noise candelling headphones I tried out at Best Buy clearly outperformed the passive noise cancelling of my 3M ear muffs - the Sony model WH1000XM3. But not quite sure yet if it's worth $350 - for my modest need of removing noisy neighbor sounds from my awareness during an otherwise meditative morning time.