Correct me if I’m mistaken about what you’re trying to do, but if you’re trying to get USB AUDIO from your controller to a computer to act as the mic input, some DJ’s use a USB Audio device like a Scarlett 2i4. However, unless you’re ready to plop down around $375, that might not be a good option for you. Another more reasonable option that I think will work is the PreSonus STUDIO 26C USB-C 2x4 audio/MIDI interface. It retails for $205.95 almost every place...
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... but I saw where ProStarAudio has a couple of open boxes for $129. You can look on eBay for either of the ones I listed, and maybe you can find a better deal. The PreSonus would require a USB-c to USB 2 cable if your PC does not have a USB-c port.
The reason for the 2 in, 4 out boxes is so you can use the USB to your computer, and still hook up the left and right output to your speakers. If that’s not important to you, a 2x2 box might work.