USB Sound Adapter Double USB Microphone Double USB Headset PD560 Model:13A48 7.1 Channel USB Sound Adapter is highly flexible audio interface which can be used either with Desktop or Notebook systems. Bundled with Xear 3D Sound simulation software, it turns your stereo speaker or earphones into 7.1 channel environment. Plug and play for instant audio playback, also compatible with all major operation systems.