... your PC.turn your stereo speaker / earphones into 7.1 channel environment.SpecificationFunctions keys: Microphone-Mute, Speaker-Mute, Volume ... output jack, mono microphone input jackXear 3D virtual 7.1 channel sound simulation software for XP / Vista is includedLED indicators ... Vista, Linux, MacOS, or higher.Xear3D (Virtual 7.1 channel sound simulation software)Manufacturer Part Number: SYBA SD-CM- ...