2Be_or_Not2Be :
If this is a "Pro" headset, why not have a secondary input for multi-channel support? You can have a dedicated 3.5mm jack for stereo output, and then a second input that connects through USB for multi-channel. So if the game support multi-channel or directional sound inputs, then you're covered.
Because it is unnecessary, this headset only has 2 speakers, as is proper.
You can plug it into any usb DAC available already for surround emulation, or better stereo driving, if you wish.
If you are not "pro" and don't wish to have a separate, high quality, DAC, you can use windows' (or dolby's, for a small fee) surround virtualization built into windows 10, it is decent enough to compete with the sort of cheap USB dongles that come with many cheaper headsets, and definitely better than any multi-driver-per-cup surround headset.