Welp it's time to break my headphones and maybe make them even better; here goes!
(Following this guide:
https://itslennysfault.com/diy-replaceable-headphone-cord-mod-to-use-sony-mdr-7506-with-a-straight-coord-yes-like-beats-but-still-better/comment-page-1)
@mawr I don't have appropriately sized spare wire, so I'm using the wire from the cable. It's insulated with super thin epoxy or something, so I have to burn that off the tips, first.
@mawr Hmm... I would have at least put a thin piece of heatshrink over each wire.
@Felthry Yes, but space is at a premium in that casing, and the insulation on those wires worked just fine while they were encased in a rubber curly cord casing, so I think it'll be just fine. ^^