Features: 4-Port R/L Stereo audio switcher: two-way switching splitter audio sharing active speakersThe 4-channel switch knob, completely isolates independent circuits, ensuring that each signal is not affected by the other three channels.Plug and for play; no external power supply required; no impact on sound quality2 in 4 out/ 4 in 2 out bi-directional 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- AC004A Item: 4 Way Bi-Directional RCA Stereo Audio SwitchSupport: 2 In 4 Out / 4 In 2 Out Cable length:approx 10M/ 32.8ftSystem: supports for Windows xpInterfaces: R/L JacksDimensions:approx 107x 92x 40mm/4.21x3.62x1.57inMaterial:Metal Note:Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand.Please allow 0-1cm error due to the manual measurment. Package includes:1 PC x RCA Stereo Audio Switch