After reading this thread I was a bit worried about trying a USB soundcard since my motherboard doesn't have onboard sound to pass though to a VM. Despite this, I went ahead and ordered an Asus Xonar U3 and figured if I had an issue with static I'd get a USB PCIe card to pass though. I plugged in the U3 into a front panel USB port, passed it though, Windows 10 automatically detected it and installed a driver but the volume was abnormally loud and turned all the way down it was barely comfortable to listen to. So I downloaded Win8.1 drivers from Asus (they're lacking in Win10 support) and installed them. Now the volume levels are normal and I don't have any detectable static even with some good IEMs.