Well it's also rather unnecessary since this type of adapter isn't that rare. Just buy one and see if it works :)

Yeah that's similar to what's being sold here, just 4 pin. Assuming that you could shave off the rubber enough to fit the plug into the hole on the QC25, that should work. 

  They sell it online but not internationally. I'd imagine ebay has a billion though. It's just a standard 2.5mm to 3.5mm adapter that happens to fit inside the hole in the QC25 when you shave off some insulation, there's nothing special about it.          Technically yes but the...

   

Seeing a lot of speculation and misinformation here, so here's some info on the QC25 plug:   Bose uses a 4 pin 2.5mm plug for the headphone side of things, and a 4 pin 3.5mm headphone plug for the device side of things.    The 3.5mm plug has four pins because of mic/remote functionality.   ...

My Beyerdynamic DT770s broke so I had to fix them. I've done quite a few DIY videos in the past so I filmed the process in case anyone else need pointers.  

Put the pics back up so they display again. Bluetooth isn't a good idea when you have gear as high end as a D2 and HD25s I'm afraid. There also aren't many bluetooth receivers with battery life like that

No one can know the answer with the little info you provide. Most likely you have a newer ipod and an old dock that doesnt support the new line out system

4.8" of Android powered music player:

Resistor adapters

Quote: Originally Posted by aj-kun look's real nice mate. did it take long to make up? Not really. Video and text/picture tutorial here: Andreas ØdegÃ¥rd » iPhone 3GS remote control headphone mod

iPhone 3GS -> Custom Sennheiser CX300/Apple remote+mic cable/phonak cable guides

Made for a customer

Thanks for the nice comments Quote: Originally Posted by markt1600 Great work! If you were able to take any pics while doing the mod, I'd love to see them. Hit the link at the bottom of the first post, where it says "more pics"