@MikeJeffries @neal_white_iii @MikeJeffries @sberns @dillanski @rsbell
Oh NO. DO NOT POWER THE 8kX from 12V. If I am reading this right, this is absolutely insane. DO NOT DO THIS.
Conceivably, you could damage more than the headset itself. Like your computer (with 12V on the 5V or USB data line - I know many expensive computers are destroyed by that), your house (in flames), or (with the PSU on a sufficiently different AC circuit and/or a very badly designed cheap transformer winding, EMF capacitor, etc, breaking down to mains), you.
And this is why some of us hardware designers are reluctant to provide any kind of support beyond lots of big all capital letters disclaimers.
Connecting unspecified voltage sources to equipment is invariably equivalent to splicing a wall socket cord to such power inputs (DISCLAIMER: Do NOT do that either, I am not responsible). You would be doing something safety testing labs have can NOT prevent from being incredibly dangerous to YOU.
You are jeopardizing a ~$1300 headset to save the trouble of buying a proper $5 USB power adapter (which notably also must be very well isolated and plugged into the same AC circuit as your computer for safety).
Yes, the internal voltage regulator will probably accept it for a while. Unless the hardware was specifically designed and tested for this, it WILL overheat. And at least this pre-production 8kX is warm enough over what I assume to be the PSU area, that I don’t expect much margin before the MTBF is drastically impacted from such things as inductor winding insulation failure, capacitor dielectric failure, etc.
@PimaxUSA I know this must seem ridiculous, but maybe you would care to enlighten these folks with a little more information?