Features4-Port R/L Stereo audio switcher: two-way switching splitter audio sharing active speakers<br> The 4-channel switch knob, completely isolates independent circuits, ensuring that each signal is not affected by the other three channels.<br> Plug and play; no external power supply required; no impact on sound quality<br> 2 in 4 out/ 4 in 2 out bi-directional switch, each output volume is independently controlled.<br> Share a single stereo source, no audio crackle- minimal distortion at highest volumes. No loss of signal when all four ports connected.<br> Specifications:<br> Model: GV- AC004A<br> Item: 4 Way Bi-Directional RCA Stereo Audio Switch<br> Support: 2 In 4 Out / 4 In 2 Out<br> System: supports Windows xp<br> Interfaces: R/L Jacks<br> size: about 107 x 92 x 40mm<br> Material: Metal<br> colour: black<br> Package Contents:<br> 1 x RCA Stereo Audio Switch<br> Only the above package content, other products are not included.<br> 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 +/- 1-3cm.