I am very disappointed. I bought these headphones two and a half ...
595592
I am very disappointed. I bought these headphones two and a half months ago and just yesterday the left earbud totally stopped working.
Before I bought these, I had previously owned a pair of the CX-200 headphones that developed the exact same problem after ten months of gentle use (I never even took them out of the house, just used them on my laptop at home).
At this point I am ready to give up on the Sennheister brand entirely, as the quality of their product is clearly not worth the price that they charge.
4011180
The headphones were worked fine for a total of TWO times. Then they just stopped. Not charging so it won't come on. I'm really disappointed because I was really excited about these headphones.
2322699
I purchased these headphones and was very satisfied for a couple of months and then the right ear bud just stopped working.  I have always used them gently and did not do anything to damage them and, of course, the return period had ended.  I do expect an item like this to last longer than a couple of dozen uses.  Very disappointed and do not recommend that you purchase this item.
2244453
I have changed my review on these headphones because 2 months after I buy them they break I was putting them on my head and they broke in half not very strongly made headphones at all I would not recommend this product. Very unsatisfied customer.
1139230
Please do not buy these headphones. They were recommended by a buddy of mine from the gym. They seem to work fine for him, but mine broke within two weeks of having them, and they never fit properly in my ears to begin with. I was not too worried about it though because they had a one year warranty. For some reason I had to wait 30 days to return the broken piece of junk. Then after several weeks Amazon shipped me the same broken headphones, and said it was my fault that they stopped working, and the warranty would not cover it. The way I see it, these headphones may be perfect for you, but if they break on you the second day you use them, you are SOL just like me. I am a broke college student and this is 35 bucks I will never get back. Thanks Amazon.
142457
I have owned two of these headphones.  I returned the first ones b/c one side stopped working.  I had my second pair past the warranty date, and the ear pieces have broken off either side (at separate times).  They must be made out of a cheaper plastic.
1319250
I have not had the headphones for two months and they are already broken, if I'm not holding the wire a certain way I can't hear out of one ear bud. It worked well for the first week but stopping operating properly after that. I don't usually write reviews but this is honestly ridiculous.
1285555
After 13 months, one headphone suddenly stopped producing sound. The warranty only covers repairs for 12 months. I effectively got one year of use out of a $300 product. I'm very, very disappointed. I brought these into work and they never left my desk, so it's not like they were subjected to any extreme use.

In its stead, I've been using a Razer Chroma headset I bought for gaming at home. The saddest part is that this headset, which costs half the price, sounds better than the Bose headphones ever did.
1353389
I'm honestly so upset.. I bought these headphone because I had heard good reviews, I noticed I had to be really careful with them because they are not durable.. Sure enough they broke.. I'm honestly so upset.. To spend $90 only for them to do this breaks my heart. Great while it lasted..
3906100
I don't suggest anyone buy these headphones.
These headphones were awful. 1) They sound terrible. I am not an audiophile at all, and I don' t understand terms like mids and highs and lows, but they didn't sound clear. They sounded just really bad. Maybe I think this because I have heard what good headphones sound like, but either way these weren't in any way good. 2) When I opened the box they were all dusty. I don't know about you, but I rather not get a new product that is dusty. 3. They were not comfortable at all. They felt like they had no grip. They seemed to have no, and although they were supposed to sit on my ears, they sat on them really badly. The headphones sat on my ears like a piece of cardboard sitting on my head. They weren't specifically uncomfortable though. 4. The wire to charge the headphones is really short. Like so short you can't wear them while they charge.

I really don't understand how these headphones got such good reviews. There are much better options than these headphones for even cheaper, even if they might not be bluetooth.
4683456
I had a set of these in hopes of replacing my aging 730s. I couldn't last even one song.

The was sound is flat and tinny compared. They're is really no other way I can explain it. These headphones failed at the one thing they are designed for which is music. I'm hoping they are simply defective.
3451587
Extremely disappointed in these headphones, they have not worked properly since day one and seem to have failed since.  On the day I received these in the mail, I plugged them in and they sounded decent, but even as I approached a moderate sound level, one where I could properly hear vocals in rock music amongst the instruments, it began to crackle and pop, something I have heard time and time again might have something to do with a hair caught in the paper piece of the driver, which there never is every time I check, even very carefully checking for one from all angles, and I've ever removed the paper to check the driver film directly.  This is the second pair of Beyer headphones I've had, the first being a pair of DT 990 Pro 250 ohms, and they have also done this same exact thing, making them impossible to use for listening at all.  As of this point, both headphones hardly work at all with barely any use.  Its almost as if the sticky film on the drivers has receded against the driver itself and cause the sound to be completely muffled and distant for some reason.  I will never be buying another Beyer product again due to their clear fragility and lack of proper QA.  There's no reason I should have to play the RMA game to get a proper pair of headphones.
4777410
I do not recommend these products for a month and a half to buy a pair of headphones and I already hurt one of the 2, this used in a half marathon race. No charge, no power. Worst of all I use it little and I almost do not enjoy it. I live in Venezuela
860231
I can't explain how disappointed I am in these headphones.  I feel I am missing the bottom 50% of the sound with these.  I tried all the different ear pieces, and none of them help.  They are all uncomfortable.  Stay away
2965297
I bought this speakers 2 days ago. I was exited to see them ..but that was only to live short. I realized that i cannot use the headphone jack of the computer or even better it doesnt have a headphone jack built in. So i had to unplug the speakers every time i want to use the headphones with my laptop. I tested the speakers with 3 different laptops and 3 different headphones ...but no use. I am returning the product. I don't know if i should reorder it ....assuming that i received a faulty piece.
520422
I used this headphones for almost 2 months and it is not work any more???

I hope the company contact me to see what is the problem.
4750202
Very disappointed! I bought this for our roadtrip next week and opened it today and the headphones worked for half of a movie and then quit and won't work again. I should have listened to the other reviews!