I figured this would be the best bet place to put this question since headphones are an included subject.

Right now I use headphones for everything at work, but when testing a change or sound, I need to change from my PC to test hardware, meaning I need to mute my PC and take the headphone jack and plug it into into the test hardware.

So the question is, is there a hub for multiple inputs for headphones that allows easy switching between the two? Almost like a KVM.

It really seems like this would already exist and I'm just not searching in the right places.