I own a pair of Audio Technica ATH-500x headphones. Ever since I got them, they only work with my computer if the aux cord is plugged in halfway. If I plug it in all the way, I get this really weird effect where I can't hear vocals in most songs, yet I can hear the instrumentals. However, some songs play perfectly fine, like Beatles songs for some reason.
The headphones are also in mono since they aren't plugged in all the way. I've tried cleaning the aux cord, installing and reinstalling drivers, repositioning the cable in every single way and cleaning the female 3.5mm cable. It's not my pc as other headphones work fine.
I ordered a few adapters to see if that will fix the issue but other than that I'm not sure what else I can do. Would an amp help? Please redirect me if I posted this in the wrong place. Thanks!