active noise cancellation does good enough job, and isn't as harsh and aggressive as the Bose QC35.Perhaps the biggest positive is that sennheiser was able to deliver any of these goods at all via wireless Bluetooth.

The headphones do a good job of blocking a lot of background noise irrespective of the noise cancellation feature.

It does a good job of blocking out most outside noise even from the busy freeway

I often work out of coffee shops where there can be a lot of noise - these headphones really do a nice job of filtering out the most annoying of the sounds around me while also providing a nice listening experience to the broad selection of music that I listen to

Sennheiser has done a great job with wired music output - music sounds way better in wired mode

The level of noise reduction is adequate, though it doesn't drown out all the loud noises around you, but it does the job well enough to make it barely noticeable with music on

These headphones do a very nice job of quieting the background noise of these appliances.

For my playlist Momentum did a good job

The Senns do a pretty good job of canceling sound

The ear pads are soft and do a great job at isolation, and are quite comfortable

The ear cushions are comfy, and do a good job of allowing extended listening

The noise cancelling is not as good as Bose, but still does a decent job and most importantly doesn't distort the sound

and they did an excellent job of noise reduction.

The metal construction and the leather really does a great job at satisfying the durability department here

Noise cancellation does good job but QC25 has better noise cancellation

Sound quality is good, they do a good job of attenuating background noise, last a long time on a charge, and I don't have to worry about getting cords stuck on things

Having tried Bose QC25's in-store, the Momentum headphones do nearly as good a job -- if not better

But these do a great job of that

I wanted an Over the Ear headphone that pumped out the volume and my Sennheiser Momentum 2.0 do the job very well

Sennheiser has done a really good job of making these headphones perform well through a bluetooth connection

I am onboard an aircraft carrier, and between the loud ventilation, server racks with multiple cooling fans, plus aircraft taking off and landing right above me, they do a great job of cutting down the noise to a barely audible "fffffff" in my workshop.

I work in a noisy office, and it does a good job at blocking road noise

Of course a big factor in sound quality has to do with a great job Sennheiser team done in tuning of these headphones to have a warm and natural full body sound that oozes with a high level of detail retrieval.

I am not a full on audio phile but I can say that the headphones does a really good job at producing sounds without making muddy highs and mids and bass is great as well

Bose Quiet Comfort 35 does a better job of canceling mid range frequencies

Bowers & Wilkins PX does a good job with noise cancellation in an airplane as well, but I’d rate it’s noise cancellation below the Sennheiser HD1.THE VERDICT

Both do a very good job with noise cancellation overall

If you've never used noise cancelling before, these will not remove all sound, but do an excellent job of removing background noise

I often work out of coffee shops where there can be a lot of noise - these headphones really do a nice job of filtering out the most annoying of the sounds around me while also providing a nice listening experience to the broad selection of music that I listen to

I feel Sennheiser could have done a better job there

They do a great job at cancelling low noises, for example, when I wear them in the office I stop hearing the constant high airflow noise from a ceiling vent, and it minimizes the bus engine's grumble

They do a good job of isolating although you can surely hear things around you.

There tradeoffs of cost and convience with this sound quality that 99.999% of us are willing to make, and I like these headphones so much that I felt it worth explaining why they do the perfect job of this

These do a decent job of isolating your music from outside

In terms of high-quality plastics mixed with metal bones, they are more a peer to the less expensive Bose and Sony; the B&O clearly wins in build and material quality

Some fault the B&O for having finnicky touch controls; these have no touch controls and only 2 buttons: on/off, vol up/down

It is possible that the B&W's are better for a bit more money, but am unable to compare.

The competition includes the Bose QC35s, the Sony WH-1000XM2, the brand new B&W PX (which is basically the excellent wireless B&W P7 plus noise cancelation).The Senn HD1’s have some things in common with these competitors.

I am spoiled by a stereo system with Emotiva electronics, and the very expensive B&W nautilus 800 series speakers, but I am satisfied listening to my TV and MP3 and FLAC files off my laptop with these headphones.

The B&W look slightly more elegant and are more compact, but with less range and no noise cancelling - which could be viewed as a positive in that there is less processing of the audio.