@ DiscipleDOC

Can you elaborate a little more about your predicament?
Typically, PC microphone and headset jacks are separate Inputs and Outputs, so if you have a single headset/microphone jack (as is with many smartphone headsets), you may need to split the signals with something like this:
https://www.ebay.com/itm...1c3b0:g:VskAAOSwgZ1XrBw~
(if that is what you are asking)


Ice

I'm assuming you have one of the Audio Technica mics like the cardioid ATR2500-USB. I don't own one of these but, as far as I can tell by looking at the specs, the headphone output on the mic is PURELY for getting a clean feed of the signal from the mic (without the added latency that you'd typically hear if monitoring the signal via the playback device in the computer). Unless you see it included in the list of Windows Playback devices, then you can't send audio from the computer back to the mic's headphone output socket. If it does appear as a Windows Playback device, then select it in the vMix Settings as the Audio Output device for the Headphone mix.

Otherwise, if you want a mix of the microphone output (without any delay), plus the other audio from vMix, you will need an external mixer (albeit a small one like a Behringer Xenyx 502) to which to connect your headphones. This will allow you to create your own headphone mix using two line-input channels, combining the vMix headphone output (from the computer's Line Out) and the headphone output signal direct from the mic. And, so that you don't hear two versions of the mic signal, make sure you mute the headphone output for the mic input channel in vMix.