So the adapter is actually the Control box that came with the headsets?
And you connect it as shown on Page 7 of 19 in the Hx_Revolver Manual?
"Usage with USB Audio Control Box (PC/Mac)
To use the headset to your computer, connect the headset’s 3.5mm plug to the female 3.5mm
jack on the USB Audio Control Box, then plug the USB cable into your computer. "
Was the Control Box connected when whatever happened to damage the headset cable occurred?
However, you mentioned in Post #5 that the adapter/Control Box works fine? How was that determined?
Do other USB devices of any sort work in the pc's USB port where the Control Box was plugged in?
Do the headsets with and without the Control Box work on any other computers?
Starting to think "Gremlins".