Grab a razor blade, your headphones, and do a "search forums" for headphone mod.
Super easy to do, and is free! (unless you need to buy a razor)
Here - allow me to plug my old post:
https://forums.macrumors.com/threads/337464/
There's a ton of generic, no-name headphone adapters on eBay (Link) for super cheap; has anyone tried these? I figure I might as well give it a shot, as they're only $4. It seems like a hard item to screw up.
Except that won't work for those of us who have headphones that use a right angle connector.![]()