Custom built:
Intel 8700k processor (6 core / 12 threads, 3.70 Ghz)
32 GB DDR4 RAM
2 1TB Samsung NVME M.2 SSDs
1 2TB HDD
GTX 2070
GTX 1070
Bunch of USB hub PCIe cards (used for VMs, see below)
Buncha LEDs, because RGB
I'm running Unraid as the OS (a VM hypervisor), which lets me run multiple VMs using multiple screens at once (and I plan to use Synergy to share keyboard/mouse across the VMs). The plan is to have a main Linux VM, a Windows VM solely for running games that I can't get to run in Linux, and a 3rd smaller VM to run on the touch screen for utility (for music, videos, etc). Atm only have a few of these VMs setup; need to sit down sometime and get the rest setup.
For audio, I've got 3 Shiit Modis (
https://www.schiit.com/products/modi-1) - one for each VM - that output into a mixing board which then terminates at my headset. I also run the mic through another channel in the board back up to whatever VM is running Discord/etc.