great dynamics and tight, full bodied bass. These are not bass heavy, but these are not bass shy either. Its a bit hard to explain but I will try. My stereo setup consists of a pair of KEF LS50 speakers. I was extremely happy with it, till one day I added a HSU Subwoofer from the home theater system to the mix. The KEF's sounded the same but suddenly I was aware of what I was missing. Think of these headphones as a similar set up where a superb stereo speaker has an amazing subwoofer added to it. The bass never over powers the mids and highs like other bass heavy headphones do. It just adds the extension that you wont notice until you hear it.

There is no noise cancelling feature here, I am fine with that. The passive noise cancelling did not bother me at all during a 4 hour flight.
What this headphone does is deliver musicality and details in spades. Compared to my Shure SE846 (4X the price) these lack maybe a very thin veil of transparency and detail. But you will be hard pressed to find the differences in an A/B test. All that over bluetooth !!!

Not sure why a previous customer complained about bluetooth range, these have a better range than Urbanite XL's that I also own. I was able to keep a steady connection to my Laptop inside the house while planting perennials outside today. That's at least a 50 feet range. When the connection does go out of range, the sq doesn't deteriorate, it simply drops out. I like it, this means I am not constantly trying to be as close to the source as possible to eke out the best possible sound from these.

Charging is via a micro usb cable. I would have preferred USB-C but that's just me. One nice touch, if you are listening to music via PC and run out of juice, you can plug these in to the PC and it becomes a USB powered headphone while it charges. Sure the USB cable is inconvenient, but it keeps you listening to the music without interruption. There is no difference sonically between a wireless or a wired connection. This isnt a new feature, other bluetooth headphones by sennheiser have this feature as well, but I find it a nice feature to have.

There are a couple of things I do not like about these headphones:
1) The cables come out from the bottom of the neck piece. This adds a bit of length to the headphone cables and it simply makes no sense ergonomically
2) The headphone cables are flat, but I would have much preferred them to be braided as well. Nylon braiding will add some tensile strength to the cables and will give them a longer life, also I find the rubber very slightly sticky on my neck. Nylon or hybrid braiding usually feels a little better.
Then again, if you keep a beard, nylon braiding will be scratchy.
3) Out of the box, you get 4 sizes of silicone tips (Xsmall, small, medium, large). My $ 9 Apie earbuds came with 6 sizes. I needed something between small and medium for the right fit. The comply foam tips for momentum fit on these just fine, so thats what I am using. Come on sennheiser, at this price, I expect a few more tips and a few foam ones as well.
4) These headphones are bright out of the box and need at least 20 hours of break in to approach their actual sound quality. I wont ding these for that. But seemed like a longer than usual time to break them in.
5) No aptX HD.

There are a few things I do like about these headphones
1) Incredible sound quality. I have quite a few bluetooth headphones including Sennheiser made ones as well as the Sony MDR-1000X and the B&W P7 Wireless. These headphones sound better to me than any of those.
2) Improved bluetooth range. If you arent getting a good range or poor sound, check your bluetooth set up, these headphones have a better range than the ones mentioned above.
3) Classy, understated design with a premium finish that oozes luxury.
4) The switch to lower the volume is towards the outside. Easy to reach if you need to reduce the volume in a hurry.
5) 15+ hours battery life.
6) Unobtrusive neckband that easily hides inside the shirt collar.
7) Built in USB DAC.
8) Qualcomm apt-X bluetooth setup. No discernible lag while watching a movie.
9) Sensitive microphone. Everyone hears me clearly and I dont have to shout during my conversation. These will also catch a lot of the external noises, but not any more than your phones built in mic.
10)Included case is quite nice and can hold an extra pair of IEM's.

All in all, until Sennheiser releases a truly over ear headphone that can cover my entire ear and supports aptX HD, these will remain my go to headphones for listening on the go and at work. (My serious listening headphone is lately a Sennheiser HD 700), sure this headphone isnt for everyone. It doesnt have noise cancelling, isnt flashy and doesnt have a rapper or a dj attached to its development, (though I hear Sennheiser is trying that as well). If music is what you seek and are willing to take on the relative comprise of going bluetooth over wired, these headphones are heartily recommended for you.

这款耳机的主要特点是声音细腻丰富，动感十足，音量很够，低音饱满。这些低音不沉重，但这些低音也不会很尴尬。这有点难以解释，但我会试着继续用的。我的立体声设置由一对KEF LS50扬声器组成。我对此非常满意，直到有一天，我在家庭影院系统中加入了一个HSU低音炮。 KEF听起来感觉是一样的，但是突然间我意识到我错过了什么。把这些耳机想象成一个类似的设置，一个超级立体声扬声器中添加了一个惊人的低音炮。贝司从来没有像其他重低音重耳机一样，可以为中频和高音提供动力。它只是增加了你不会注意到的扩展音域，直到你听到它。

这里没有噪音消除功能，我很喜欢这个。没有噪音的消除，但是在4个小时的飞行中这根本没有打扰到我。

这款耳机的功能在于提供音乐和细腻的声音。比起我的舒尔SE846（是这个价格的4倍），这些缺乏透明度和细节的面纱。但是在A / B测试中你会很难找到差异。所有的都比蓝牙耳机好！

不知道为什么以前的客户会抱怨蓝牙的连接范围不够，这些都比我有的那款Urbanite XL更好。今天在外面摆弄花花草草的同时，我还能够与我家里的笔记本电脑保持连接。那至少有50英尺的范围。当连接超出范围时，完美音质不会变得很差，只是掉线了。我喜欢它，这意味着我不是一直试图尽可能接近源头，从而得到这些可能的最好听的声音。

充电是通过一个微型USB电缆进行。我会更喜欢USB-C，但这只是对我来说。这是一个很好的接触，如果你能通过电脑听音乐，刚好果汁喝完了，你可以将它们插入电脑，它将成为一个USB供电的耳机，它也会自己充电。我知道USB电缆不是很方便，但它可以让你不间断地听音乐。无线或有线连接之间没有区别。这不是一个新功能，森海塞尔的其他蓝牙耳机也有这个功能，但我觉得这是一个很好的功能。

这些耳机有一些我不喜欢的东西：

1）电缆从颈部的底部伸出。它们还为耳机电缆增加了一些长度，而这在人体工程学上毫无意义

2）耳机线是平的，但我更愿意再编织它们一下。编织尼龙将增加一些抗拉强度的电缆，并会给他们更长的寿命，我也发现橡胶会非常轻微的粘在我的脖子上。尼龙或混合编织通常感觉好一点。

再说一下，如果你留着胡子的话，尼龙编织将会使你发痒。

3）开箱即可得到4种尺寸的硅胶头（很小，小，中，大）。我9美元的Apie耳塞有6种尺寸。我需要中小尺寸之间的合适配合。顺应技巧使用这些就好了，这就是我正在使用的。在森海塞尔，以这个价格，我希望还有一些其他的提示技巧和一些塑料泡沫就好了。

4）这些耳机的声音响亮到可以超出盒子外面很多，但是至少需要20个小时才能接近实际的音质。我不喜欢这个。但似乎要比平时更长的时间才能融入它们。

5）没有aptX HD。

有几件事让我很喜欢这些耳机

1）令人难以置信的音质。我有相当多的蓝牙耳机，包括森海塞尔制造的以及Sony的 MDR-1000X和B＆W P7 Wireless。这个耳机听起来比任何这些都要更好。

2）蓝牙范围改进了。如果你没有得到一个好的范围或听到声音很糟糕的话，检查一下你的蓝牙设置，这些耳机有一个比上面提到的更好的范围。

3）优雅，低调的设计与超出自身价格的完美。

4）降低音量的开关是朝向外部的。如果您需要快速减小音量，就很容易实现。

5）15+小时的电池寿命。

6）不显眼的带子，很容易就可以隐藏在衬衫领子里面。

7）内置的USB DAC。

8）高通apt-X的蓝牙设置。在看电影时没有明显的滞后。

9）敏感好用的麦克风。每个人都清楚地听到我的声音，我不必在我的谈话中大喊大叫。这些也会吸入很多的外部噪音，但不会超过你的手机内置麦克风的范围。

10）包括的情况是相当不错的，可以容纳一对额外的IEM的。

总而言之，直到森海塞尔发布了一款真正的耳塞式耳机，它可以覆盖我的整个耳朵，并支持aptX HD，这些将使我可以在旅途中和工作中一直听。 （我最近认真听歌用的耳机是森海塞尔HD 700），确保这个耳机是不是每个人都会喜欢。它没有噪音消除，声音不是特别丰富，可能这个耳机用来听说唱和DJ效果也不是特别好，（虽然我听到森海塞尔也试图改进这一点）。 如果适合的音乐是您所寻求的，也愿意承担蓝牙有线的相对构成，那我热忱地为您推荐这些耳机。

e past. Before going further, let me say that this will be a review based on the use of these as an everyday wireless headset for your phone, which is what I believe most people shopping in this segment are looking for.

If listening to music and sheer audio quality was the only thing that mattered, I would probably give these 5-stars since I think they do about as well as can be expected from any Bluetooth earbudsthe limiting factor being the quality of the Bluetooth audio signal rather than the earbuds themselves.

As a headset for general use, though, I have three primary gripes.

1. The Ear Buds REALLY Should Have Been Designed To Retract.
This is something that I obviously knew about prior to purchase, but it's not until I started to wear these everyday and use them on a regular basis that I began to really understand how annoying this oversight in design could be. I generally have these around my neck almost all day, but it's not as if I'm making phone calls or listening to music the entire day so when I'm not, the ear buds just dangle precariously and I'm aware that I have this pretty delicate, but fairly pricey thing just waiting to get caught on something and ripped off.

The alternative would really be to remove the band from my person and store it securely in the very nice protective case that Sennheiser provides, but I feel like that sort of goes against the idea of a headset since doing so would effectively cut me off from the hands-free call receiving benefits. So it seems to be either use it the way I would use my normal headphones for listening to music (although my normal headphones are far more robust) or have my earbuds get caught on everything from my seatbelt to the straps of my backpack.

So this is one of those things that I simply underestimated the annoyance of going into it, but Sennheiser should really do better next time.

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2. The Mic Needs Some Sort of Noise Cancellation
Part of the reason one would purchase a headset like this is for the combined ability to listen to audio and make phone calls. With the average wired headset, you often notice people moving the mic portion closer to their mouth during their phone calls. The reason for this is pretty obviousit essentially reduces the signal-to-noise ratio by making your voice louder than the ambient noise. The location of the mic on the neckband, however, means that without some sort of technology to reduce the ambient noisesomething that doesn't seem to be presentthe person on the other end of your phone call is going to hear a whole lot of what's going on around you.

So while you will hear the other person well thanks to the great audio quality, this quirk of the microphone means that the other person may not hear you so well without you having to raise your voice louder than normal.

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3. Bluetooth Can Be Finnicky

This isn't so much a specific knock against this headset (although, I feel like it's performance in this regard is not as good as some other headsets I've tried), but Bluetooth can be a finnicky thing with connection being unexpectedly lost between the device and your phone. I was actually on a walk where the headset simply disconnected and refused to reconnect with the phone despite all of my attempts. I'm not sure what prevented the pairing (maybe it overheated?), but a few hours later, it suddenly started working again without a hiccup. This hasn't been a consistent problem for me so it's been difficult to really pin down the cause, but I would just put it out there that you might purchase these and suddenly find yourself in situations where they may not be pairing with your device for periods of time.

I suppose that's a risk with all wireless technology to a degree, but as I noted above, I have other Bluetooth headphones and headsets that I've used that haven't suffered from the quirks that I've experienced with this particular headset... That having been said, I guess take this last one with a grain of salt.

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So now that we're done with the gripes, I'll bring up some positives. I find the controls on the neckband to be logically laid out and easy to use. The battery life has been very good for me and I've never had a situation where I was even close to running out of battery. The audio quality is, of course, excellent. And the headset looks pretty good in my opinion.

I've replaced the stock ear bud tips with Comply Foam tips simply because I find them to be more comfortable, but that's personal preference rather than a knock on the stock ear bud tips.

I hope this has provided a little bit of insight to help you make an informed decision. Frankly, there doesn't seem to be any standout in this category that performs excellently in all aspects so at the moment, it's going to come down to where you are willing to take your compromises. For me, even despite that grievances that I've mentioned, audio quality is still paramount to me, so I will continue to use them and if I could go back and do it again, I would have still purchased them.

如果对于听音乐来说，纯粹的音质是最重要的，我可能会给这款耳机5星级，因为我认为他们所做的一切，以及对任何蓝牙耳机都存在的，预计的蓝牙音频信号质量的限制因素，而不是比较耳塞本身。

作为一般用途的耳机，虽然我有三个主要的不满意的地方。

1.耳芽的设计真的应该撤回。

这是我在购买之前就已经知道了的东西，但是直到我开始每天拿着这些东西并定期使用它的时候，我才开始真正了解这种在设计上的疏忽是多么令人讨厌。它几乎整天都在我的脖子上，但这并不代表着我一整天都在打电话或听音乐，所以当我不用的时候，耳塞只是摇摆不定，我知道它有这个相当微妙的附件，但是又相当昂贵的耳机，只是等待能抓住它的时候把它扯掉。

另一种方法就是从我的耳机上移走，并将其妥善保存在Sennheiser提供的非常好的保护套中，但是我觉得这样的做法违背了耳机本身设计时的想法，因为这样做会阻止我从习惯上免提通话。所以它似乎是要么让我用普通耳机听音乐的方式（尽管我的普通耳机要强劲得多），要么把我的耳塞从我的安全带一直塞到我背包的皮带上。

所以这是我低估了买了它之后的烦恼之一，但森海塞尔下一次应该会更好。

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2.麦克风需要某种程度上的噪音消除

购买这样的耳机的部分原因是可以听音频和拨打电话。使用有线耳机时，您经常会注意到人们在打电话时将麦克风部分移近嘴巴。其原因很明显，通过让声音比环境噪声大，从本质上降低了信噪比。然而，麦克风在颈部的位置意味着，如果没有某种技术来减少环境噪音，那么似乎并不存在可以降低信噪比，电话另一端的人将会听到你身边有很多杂音。

所以，当您听到其他人的声音质量很好的时候，这个麦克风的怪癖可能意味着对方听不到您的声音，所以您需要提高声音。

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3.这个蓝牙可能有点吹毛求疵

这不是一个特定只针对这个耳机（虽然，我觉得这样的性能不如我尝试过的其他一些耳机），但蓝牙确实有点吹毛求疵，它接连着意外地和设备还有手机失去联系。我当时实际上正在散步，耳机只是断开了连接，尽管我所有的尝试都没能让它重新连接电话。我不确定是什么阻止了配对（也许是过热？），但几个小时后，突然间又开始工作，没有出现不一样。这对我来说并不是一个一贯的问题，所以很难确定原因，但是我只是把它放在那里，你可能会购买这些，然后突然发现它可能与你的设备有一段时间不配对。

我想这在所有的无线技术方面都有一定的风险，但是正如我上面提到的那样，我还有其他的蓝牙耳机和耳机，这些耳机并没有出现我在这款耳机所体验到的怪癖。说了那么多，我猜这是最后一个。

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所以现在我们已经说完了抱怨，我会提出一些积极的评论。我发现颈上的控制按逻辑布局，易于使用。电池的使用寿命对我来说是非常长的，我从来没有遇到过电池电量即将耗尽的情况。音频质量当然是非常好的。耳机在我看来也不错，。

我已经完全用泡沫取代了耳芽，因为我发现它们更加舒适，但是这是个人喜好，而不是在说耳芽的使用技巧。

我希望这能为你提供了一些直观的建议，帮助你做出明智的决定。坦率地说，在这个类别中，似乎没有任何出色的表现，所以目前它将放到你愿意做出让步的地方。对我来说，即使我提到了这些怨气，音质仍然是最重要的，所以我会继续使用它们，如果我还要回来再做评价的话，我仍然还会购买它们的。