Customer Ratings & Reviews

Incredible Sound and Comfort I am absolutely thrilled with this product! The sound quality is truly outstanding, delivering crisp highs and rich, deep bass that transforms my favorite music. Beyond the audio performance, they are incredibly comfortable, fitting perfectly for long listening sessions without any fatigue. They feel durable, look sleek, and are an all-around fantastic purchase. A premium listening experience well worth the investment!

Love these! I’m coming from the AirPods Max which are arguably the top of the leave for sound quality and ease of use, so I wasn’t sure what to expect from these. They are just as seamless to use as the AirPods, and they sound fantastic very lightweight, great for long wear. The noise cancellation is just a bit below AirPods but work great in almost every case you will actually use it for. Transparency mode does sound a little bit like you’re under a pillow, a little muffled. So, not great for having conversations through, but works great for just hearing your ambient surroundings. Love these, no regrets. Also battery life is the best I’ve ever experienced, 10/10 **Audio Jack note: these plug into a standard headphone jack, but the end that plugs into the headphones themselves is a smaller size. Just keep that in mind if you are using them as monitor headphones so you don’t end up with unusable audio cords.

Great audio. Great battery. Very comfortable. Touch controls a little tricky to learn and very sensitive. Volume could be a little louder. They are very smart at knowing when they are off the ear, but stay connected way to long when taken off. Also loses connection more than I’d like to see.

For some reference, I use the Sennheiser HD660S's at home as my daily drivers. I wanted something that could get 80% of the way there for a trip I have coming up. I often use them for games, movies, anime, and music (all kinds of genres). I will be comparing these to the Sony XM4, which I bought before these. I initially bought the Sony XM4's based on reviews I saw online on YouTube and Reddit. Wow, were they wrong. The first things you'll notice when getting the Sonys is that they feel SO cheap. It feels like a set that would be handed out for free at an airport. What's even worse is the sound, the Sony headphones sound like absolute garbage. Almost muffled. They focus on bass and they really make sure that bass ruins everything else. It should have been a red flag when people online said to download a paid 3rd party app to fix the EQ on the Sony headphones. I only still went with them because both the Momentum and Sonys are scored similarly on Rtings with Sony winning on noise cancelling. Anyways, thats what made me try these... Not only are these substantially cheaper and higher quality feelings and looking... but... it even sounds FAR better. These aren't HD660S's but they do get 70-80% of the way there. These will serve those who prefer analytical listening much better than the competition. vocals and strings are clear, but bass is still heavy hitting. I do swap between 2 EQs while using these. 1 for movies and heavy music (just flat everything) and 1 for light music which has reduced bass. The superior audio, cheaper price, higher quality build, AND DOUBLE THE BATTERY LIFE (60 hours) makes these the obvious purchase. There are a couple of downsides though Cons: - Not as comfortable as the XM4. I am pretty sure I can even feel my ear hitting the wall where the driver is, which is my biggest complaint and why I made this a 4 star review. I wish these had deeper pads on them. They are still comfortable enough to where I have fallen asleep with them on. - The noise cancelling isn't *as* good as Sony's. With no audio playing, it's like 15% worse than the Sony XM4, however with music playing, its more like 5%. Even with the worse sound cancelling, its still quite good, it's unlikely youll hear too much while listening. Pros: - USBC connection can transfer audio AND CHARGE (the Sony's don't let you listen and charge for some reason) - Clear Audio w/o compromising on bass - 60 Hour Battery life - Decent App, better than Sony - Reasonable pricing ($279.99) - Premium build quality comparing to competitors To me, it's clear Sony is a technology company who is selling headphones based on their superior noise cancelling technology and they don't care about sound audio. Sennheiser compromised a little on noise cancelling but delivered on what they do best, audio. Side Note: If you don't need the noise cancelling aspects, I would recommend looking into a wired solution. Trust me, it will get you the best sound and best value.

I absolutely love these! I have last years Momentum 3s and the Apple AirPods Max, and several other good headphones (focal elex, noir black, 6XX, just for a few comparisons), and these are what I now carry in my gear bag. I was worried about touch controls, but these are spot on every time. Perfectly quick accurate and intuitive. They are light and really comfortable (I wear glasses and no impact or pressure on the stems while keeping a good seal). Battery rated at 60 hours. I think anything over 12 is good enough, who listens to headphones for that long straight that they can’t plug in for a quick charge. Anyhow, 60 is crazy long, especially as they are super light, so the batteries must be made out of magic or something… lol. These also have good noise cancelling. I don’t use that feature much or heavily, but made an effort to drive home wearing these with all 4 windows of my car down. Except for the big semi trucks, it was clear music only, even on the Highway. So pretty real world impressive. But headphones are about music, and these are amazing. Truly amazing. Sennheiser has always had high quality sounding gear, but these can only be described as special. I love how these deliver bass big and bold but don’t drown out other parts of the music. Super clear sound all around. Speaking of all around, these have great spatial placement and a perfect sound stage. I can’t say enough how impressed I am with these headphones. I wish they got just a little louder, they have the extra room to blast, but I’m sure that’s to protect our eardrums. I can easily say these are my favorite pair, and think their build, comfort, and amazing sound quality is easily worth their price tag.

The Momentum 4 Wireless headphones provide outstanding sound quality, featuring rich detail and a well-balanced profile that enhances every genre. The adaptive noise cancellation performs well, although it does not quite match the capabilities of Bose or Sony’s premium models. The true highlight of these headphones is their battery life—a remarkable 60 hours on a single charge, making them an excellent choice for extended listening periods. Comfort is commendable, with soft earcups and a lightweight build, although the design appears somewhat more conventional compared to earlier Momentum models. Connectivity is effortless, with aptX Adaptive support guaranteeing high-quality wireless audio playback. In summary, the Momentum 4 is an excellent choice for individuals who prioritize sound quality and battery longevity, even if the design lacks a touch of uniqueness. Please inform me if you require any adjustments!

These headphones are awesome! I’ve had em for about 6 months and have charged them maybe 4 times. After trying the Sony XM5 and Bose QuiteComfort, I decided battery live was more important than noise cancellation, which isn’t the best out of the three. In terms of sound, these just blew me away. Bose were also pretty great at that. Sony’s noise cancellation was killer, but it was too much for me to handle, I guess. These aren’t the loudest. I can always turn it up but I’m used to listening at 55% on my AirPods. With the Momentum, I have to bump it up to 65-70% to get a similar output. This, after turning off the Dolby Atmos setting, per recommendation. Sometimes when I put the set back on after taking a break the music won’t continue, as it’s supposed to. It’s inconsistent in that way. I’m happy with my purchase, incredibly clear listening experience, great battery life and comfortable.

I read that these headphones really start to work well once you update them to the latest firmware. I'm happy to report that once I did that, they are easily the best ANC headphones I've ever purchased. The inbuilt mic is not great (not that I bought them for that), but I want to set that expectation. Otherwise, they are lightweight, comfortable, and handle spacial audio incredibly well. Pair them with a Bluetooth aptX receiver like the Sennheiser BT 600, and let me tell you, it's a real treat. These are my daily driver headphones for work and I've even used them via usb-c to usb-c to play games on them, and they are quite good for that (when paired with spacial audio). USB-C connectivity is also a big thing....for both charging but also direct connections, which they support out of the box. Battery life really is quite impressive...advertised 40 hours...I've used them all day and only burned half the battery, so I feel that matches with the advertising. Very pleased with my purchase. Huge upgrade from previous Sennheiser and Bose ANC headphones.

These are by far the best headphones I’ve ever had, unbelievable battery life, really good sound and good adjustments in the equalizer. and are also super comfortable and fairly light, the only thing i don’t find PERFECT is that they are not very tight on your head, not loose enough to just fall off by any normal means but can be annoying in the gym.

The sound quality is top notch, even my little sister noted that she could hear every single instrument being played in each track, nothing muffled whatsoever. The batter life is also amazing, the advertised 60 hours is 100% accurate. They are also extremely comfortable, making them easy to wear for long periods without issue. I would recommend them to anyone in the market for high quality audio!

Pros: Nice full sound. Even fairly heavy bass if you want. You will want to download the Sennheiser app to really dial in the EQ you prefer. The noise cancelling works very good as well, it makes reading a book really peaceful. They are perfectly comfortable with glasses too. The mic is surprisingly clear to boot. Cons: These are by no means heavy, but i wish they were a little bit lighter weight. The only other thing is I wish they got a little louder. They get plenty loud for sure, but i wouldnt complain about more. All in all, its worth it to me for 300+tax. Any more money and I would want full metal construction and higher end headband material/stitching.

I bought an open box, excellent condition version of this headset. Great sound quality and extremely comfortable. Connectivity is sometimes an issue. If I accidentally hit the pause button on the side of the headset I won’t be able to hear my music or videos once I hit resume. I have to fully restart the headset in order to hear stuff again. The charging cable was missing from my purchase but I had an extra usb-usbc charger lying around so it wasn’t too big of a deal.

Been using them for a few days now. Overall, a comfortable headphone with very good and clean sound quality. Maybe not the loudest headphones out there but that isnt really the point of these. My only issue with these is that they aren't great for gaming with friends. The sound switches to mono when using the mic and playing a game. Sound horrible. Maybe one day this can be solved for lol But they do sound awesome when using them for gaming and i dont need the mic.

Excellent sound, comfortable, great battery life. I've tried a number of the full-sized wireless headphones and found them all pretty similar--which means pretty good. Not as warm as a good pair of wired phones, and the touch buttons on the outside of the cans are pretty annoying as they are sensitive and imperfect, but surprising in their overall quality. The thing that really sets these apart is the battery life. Not having to worry about recharging a lot is a huge advantage on long trips.

I really like these headphones - the sound quality is fantastic and the ANC is better than most I've tried. And the battery seems to last forever! My only gripe is that they seem to turn themselves on from time to time without even touching them - I'll be watching a video on my phone and the sound will go out because these headphones turned on and connected the bluetooth on there own. a small gripe, but an annoying one.

Unlike other manufacturers Sennheiser specializes in headphones and microphones. That in itself tells you they are engineered differently. Too much plastic to convey a premium feel, but otherwise they would be too expensive. Phone conversation is very clear. They are light , comfortable to wear. Music sound is fantastic and the battery life is impressive!

Bought 2nd pair of these for my college bound son in dorm life. These sound amazing and the battery life is insane. I asked him 1 simple question before I bought them. Do you want quality or brand - what’s more important to you? I was thinking he’d want apple being an 18yr old. Nope! He said quality and he loves them. I use them at my office where I have to hyper focus and I have loud coworkers around me. The auto on/off is amazing and the over the ear comfort is great. I’ve bought 5 different headphones from this brand and they never disappoint. I usually just end up eventually after years wearing out the physical structure of a device.

Good audio quality. Must use with SmartControl app thought. Wished max audio was higher. At times it's hard to hear while in loud environments such as airplane. Note that my hearing isn't well. Excellent 60 hour battery.

Amazing hardware as always from Sennheiser like always. Comfortable fit and good build quality. Major problems with software and features. I got these to upgrade from the PXC-IIs that were starting to drop my connection after 4 years of use, while, the PXC-IIs were not perfect at connecting with more than one device at a time, they preformed far better than the M4s. I will be listening to music or on a call and if battery saving auto detection mode are on, the M4s would randomly disconnect, even with active audio coming out of the headsets. This ought to be a simple firmware fix, but reading online it seems this has been an ongoing problem since launch. I really wanted to love them because my PXC-II were amazing. Another pet peeve is that you can’t turn off ANC at all, you can only toggle transparency mode across a slider. All in all the M4s are great for reproducing sound and ANC, and the battery life is amazing but all the poorly implemented “features” make this model a miss for me. Might be returning them.

These headphones are amazing! I was skeptical however after the first juice I'd love the future where you just place The headphones on your head and automatically syncs and turns onto your music. Rich sound quality that doesn't sound like your in a tin can. I was super impressed with the battery life. The tap controls simple and easy to learn and to use. The construction of the headphones are good sturdy and they don't feel like they're going to break . I like the fabric on top of the headband and they're super light and actually fit around your ears so you don't get that annoying press on your ears. Excellent buy and worth the cost.