My impression after 2 weeks.
- NC optimiser helps reduce AC hiss / white noise / cabin pressure. Try using it in quiet environment. MDR-1000x ANC hiss/noise/pressure is about the same level as QC35 and by far better than any Sennheiser ANC headphones. And you can turn it off in quiet places unlike the Bose.
- Creaking is completely gone after a quick fix using dry lube.
http://www.head-fi.org/t/818871/sony-mdr-1000x/1275#post_13127555
- ANC working very good at my relatively quiet home environment. You will find your home is noisier than you might think. Lower volume (with same details) is good for your ears.
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