Not really Noise Canceling

I work in a relative quite place but AC and people talking distract me from focus in my work ( web development) Sound Quality. In terms of quality sound I would say is good . However is not loud enough to shut down outside chats and noise. If noise cancelling is on then the sound quality is a little bit muffled. Noise Canceling : the main reason to buy this was NC. when first used you have that effect that suddenly all noise are cancelled but in a minute or two you realize is not . you can hear AC, highway car noise etc. this are all low freq noise . Voices are very sharply listened using NC. they seem even amplified. Maybe the seal of the ear muffle is not good but I can not tell for sure Comfort: They look sleek, they look awesome . They stay flat. the pad on the bow between ears is really good . However the ear mufflers or pads are rather small and if you use this for more that 4 hours as I do the lobe of the ear will start hurting as is clipped under the mufflers. So have small ears if you want this Pros : sleek, good looking, good pad for the bow good noise if not using NC, excellent price for the results if on budget Cons: NC not very effective , too much pressure on the ears , sound muffled when NC is active

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