They are definitely effective in improving my concentration and work environment

In increasingly noisy environments, I noted->Airplane

Noise cancelling seems quite good although I have not tried them in a very noisy environment

Noisy environments become like libraries

I work in a very loud environment and it doesn't take the background out all that great

Noisy environments become like libraries

You aren't going to get Bose noise cancelling out of these for sure, but if you work in a slightly distracting environment and just want to get rid of the background noise, they will do you fine

In a noisy environment they will still sound good and do a reasonable job cancelling external noise, and as I stated earlier the ANC generated white noise is tolerable with music playing.

When connected to a mac it uses the entry-level SBC codec (not AAC or APTx), but ramps up to 325kbps quickly when within 1-2 meters of the computer (and in a VERY noisy 2.4GHz environment).Overall comfort as designed is ok, though the head band is a bit harder than I would hope for this price rage (it's padded enough to look padded, but when you press your finger against it quickly realize there are hard surfaces at the front and back of the band that will be providing the bulk of the support

Also in such a noisy environment being able to tune out all the noise by turning on the noise cancelling feature is a huge plus!

At this time it has gone in to the e-waste bin

Then I noticed that the noise cancellation was not as good as I first thought when I used them in NYC on the street.

At this time it has gone in to the e-waste bin