I have a nice, old, beaten up pair of headphones that I’d like to use at work, but the audio out on my work pc is busted. However, this pc has many many usb ports. I know usb headphones exist, but I’m picky about how headphones sound and I like these 
Is there any converter that will convert an analog stereo signal (1/4 or 1/8 inch plug) into usb?
Cyberguys has a USB audio controller. It looks like you can just plug in your headphones at the other end of the plug. It’s about $30.