... simulation software, it turns your stereo speaker or earphones into 7.1 channel environment. No drivers required, just plug and ... Functional keys: Microphone-Mute, Speaker-Mute,Volume-Up, Volume-Down 7. LED indicators: Microphone-Mute Status, Activity 8. Include Xear 3D, the ... virtual 7.1 channel sound simulation software for Windows XP/ Vista 9 ...