... active speaker or stereo earphone. Windows 98SE, ME, 2000, Server 2003, XP, V Add a virtual 7.1 channel sound to your ... PC.turn your stereo speaker / earphones into 7.1 channel environment.SpecificationFunctions keys: Microphone-Mute, Speaker-Mute, Volume ... , Linux, MacOSDesktop or notebook PC with a USB port.Stereo active speaker or stereo earphone.Windows 98SE, ME, 2000, Server 2003, XP ...