4 Ways R L Stereo Audio Switcher - Bi-Directional switching splitter audio sharing active speakers,audio selector switch providing clear and distinct audio.Switch Knob - 4 channels switch knob,easily switch between audio in or out, fully isolated independent circuits, ensuring that each signal is not affected by the other three channels.Plug and Play - 4 Ports R L stereo audio switcher is no external power supply required, sound quality will not be affected!Compact Design - 4 Ways Audio Switcher Splitter is 11cmx9.5cmx4.5cm/4.33inchx3.74inchx1.77inch,iron metal case, compact size and lightweight design, suitable for home and office use.Wide Compatible - L R Sound Channel Audio Switch Splitter selector designed for all types of audio amplifiers, DVD stereo speaker, player, game console ,TV ,headphone etc.Colour:BlackMaterial:Aluminum alloySize:11cmx9.5cmx4.5cm/4.33inchx3.74inchx1.77inchPackage Contents:1 * RCA Audio Switcher1 * Audio Cable1 * English instruction manualOnly 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 +/- 1-3cm.