Features4Port R or L Stereo audio switcher: twoway switching splitter audio sharing active speakersThe 4channel switch knob, completely isolates circuits, ensuring that each signal is not affected by the other three channels.Plug and play no external power supply required no impact on sound quality2 in 4 out or 4 in 2 out bidirectional switch, each output volume is independently controlled.Share a single stereo source, no audio crackle minimal distortion at highest volumes. No loss of signal when all four ports connected.Specifications: Model: GV AC004AItem: 4 Way BiDirectional RCA Stereo Audio SwitchSupport: 2 In 4 Out or 4 In 2 OutSystem: supports Windows xpInterfaces: R or L Jackssize: about 107 x 92 x 40mmMaterial: Metalcolour: blackPackage Contents: 1 x RCA Stereo Audio SwitchOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 13cm.