Solo funcionan con "sistemas operativos":

What operating system is compatible with Razer ManO’War?
The wireless headset is compatible with PC running Windows Vista and higher, Mac running OS X 10.9 and higher as well as the PlayStation® 4.
Y una vez conectados funcionan como "salida única", deshabilitando otras salidas posibles (en PC/MAC):

Can I listen to both my standard stereo headset and my Razer ManO’War at the same time?
No. Once the USB connection to the Razer ManO’War is established, it will function as the default audio output for your computer. Some software however allows you to switch the audio output on the fly, but you will not be able to listen to the same source material through both a standard headset and the Razer ManO’War at the same time.