i bought these headphones about 2 months ago for use while in the office. it was important to me that they were great with sound and music, but also needed to function as a teams call headset. I am very pleased with their performance and honestly shocked at how comfortable they are. Also, for you big headed folks, I have a large head and these fit very comfortably. By far the most comfortable headphones i've ever used.

I read all the reviews and did some research and fell on these. Yes, they're a couple of years old but the music quality that comes out of them is simply beautiful in every way. You can hear every single part of the song like it's supposed to sound. Phenomenal job, Sennheiser

These are an exceptional pair of headphones - my first pair of Sennheiser product. The sound quality feels straight out of a movie and the noise-cancelling ability makes them an investment I recommend.

I received this for Christmas after adding it to my list (after a lot of research too), and I am very glad that I got them. The noise cancellation is supreme, and it doesn't feel pressurized like the AirPods Max do. I have tried the AirPods Max before, and they didn't disappoint, so I set them as a benchmark for these. I think that these definitely were close to the quality, and the control in the app is much more refined than what Apple gives you. All in all, great sound quality, and I would buy the same pair again if they reached the end of their life!

Amazing sound, and even more amazing when you consider the price to performance ratio. I compared these headphones against Bose QC45 and Ultra, as well as Sony 1000 XM 4 and 5, Beats Pro, Apple Max headphones and several other highly rated brands….and the winner was the Sennheiser Momentum 4 wireless headset with noise cancelling that would make a meditative monk feel lonely. And the complexity of the sound stage is exceptional and immersive. Battery life is exceptional at 60 hours. Very pleased with these headphones.

I just purchased the Blue Denim Momentum 4 to go along with my Black and White Momentum 4s. These are truly outstanding. The aptxAdaptive is incredible. The Motorola Edge Plus 2023 has the aptxAdaptive codec and paired with my Momentum headsets the performance is incredible. To get the top performance out of the Momentums requires a device with aptxAdaptive. That let's out Apple and Samsung. But paired with a proper device the Momentums are incredible. Great hi end. Beautiful mids and outstanding bass without overpowering. The soundstage is wide and believable. The Sennheiser app is a must. The active noise cancellation is very good. If sound quality is your top desire, there are no Bluetooth headphones that are better.

Tried the AirPods Max, Bose 700,s & QC 44's, the beats studios, and the Sony XM5's. I am an audiophile and these Momentum 4's sound better than any of the rest. Deeper sub base and clean highs that do not become brash with increased volume. Highly recommend these cans

I've had these headphones for three or four years now. Sound quality is fantastic, and has stayed consistently good over long periods of time. They're quite comfortable as well. Battery life is ok, but tends to drop pretty fast. For the most part I love them, but the Bluetooth functionality was made by extremely interesting critters. Whichever team was responsible for putting the Bluetooth together HAS to be made up of neolithic era proto-humans, because there's no way I can believe that I share a species with them. The tiniest shift will rob the audio from my game, computer, or whatever device I have them connected to, whether it's taking out the charger, trying to adjust the noise-canceling, or trying to use them in conjunction with a microphone. God forbid you have the nerve to try and use these headphones across multiple devices. You're just begging for cross-connection shenanigans, and for you to spend multiple minutes recalibrating, forgetting and reconnecting to all your devices, only to find out that once you've established a connection to the device you actually want, no sound is coming through so you get to do it all over again. This isn't an apocalyptic problem, but it's certainly frustrating. I don't want to spend multiple minutes troubleshooting every time I answer a call or open up a new device. The experience is meant to be relatively seamless. Apple has had Bluetooth connectivity solved for a decade. The fact that the functionality on these is so atrocious is baffling and drags down an otherwise great product. 5 stars if they overhaul this issue, otherwise I'd say just find a wired version.

The sound quality is amazing, WHEN they work. The right ear bud has a tendency to either become muffled or cut out altogether, even after double checking for correct fitting for my ear. They also aren't comfortable for very long stretches (my Bose earbuds could be worn all day comfortably by comparison). The other very frustrating thing is charging! Be prepared to pop these in your ears only to find they haven't charged ONE bit ALL day long. Even when you seem to find a sweet spot where the indicator turns yellow (indicating charging) it still might not charge. The app is very useful at customizing and fine tuning the sound that you're looking for based on your preferences. The noise canceling is also great. But I definitely would've bought something else had I known about these frustrations.

They're great when they work, but the refuse to. Randomly decide to not connect to anything, got locked out for 4 months, was able to use them again. Got locked out for a week or so, and nowbI just got locked out of them again. When I try to pair them they just turn off.