Originally Posted by themessenger500
They might also mean a USB headphone, one with it's own DAC. In that case, still no problems. But probably requires batteries. And they're pretty uncommon.
There are few headsets/headphones that themselves are USB and have a DAC.
Almost all of them are regular headphones that ship with a USB to audio converter. For example the Plantronics DSP-500s are simply Plantronic Audio.90 headphones with a USB->audio adapter. And three times the price.
In fact, I'm not entirely convinced what the point of USB headphones are, short of computers that don't have soundcards. Soundcard or USB headphones, it gets turned into an analog signal eventually, and I'm not convinced the DAC for these USB headphones is any better than the DAC on soundcards. Not to mention giving up the soundcard means giving up hardware accelerated sound, if I'm not mistaken.