My Sony Vaio Duo 11 came with this weird 5-conductor version of the Sony MDR-NC33 Active Noise Isolating IEM that relies on the Duo 11 to do the noise cancelling sorcery. They aren't of much use to me, since I hate IEMs and their earwax-collecting tips. So, I plan to disassemble the NC33's and use the internals to make my very own active noise cancelling headphone that can only be used with my Duo 11!
It was surprisingly easy to disassmeble.
This kind of design is interesting - the driver is mounted perpendicular to the silicone tip, allowing for a 13.5 mm driver.
Some close-ups so I remember the wiring:
Will post more stuff soon. I will first install these internal components into a cheapo set of headphones to test it out first so I don't ruin anything expensive.