... Xear 3 D Sound simulation software, it turns your stereo speaker or earphones into 7.1 channel environment. No drivers ... Connectors: USB type-A, stereo output jack, mono microphone-input jack Functional keys: microphone-mute, speaker-mute, volume-up, and ... sound simulation software) for Microsoft Windows XP/ Vista Stereo active speaker or stereo earphone Mono microphone (optional) Update Date:2011-11- ...