RCA L/R stereo o switcher 4 IN 2 OUT or 2 IN 4 OUT.Suitable for multiple sources signal select or multi-room paralleled amplifier or active speaker distribution of the same signal playback. Use o switch/Lossless device, switch between different o in or out.Stereo Switch Box with Signal Lossless, Sturdy Aluminum case Strong Anti-Interference, Connector Distributor RCA L/R Stereo Splitter Boxes.Will not increase the sound or make the sound not fade. Simply allow you to switch between RCA cabler without in the way.The o splitter box has 4 o source inputs, 2 output (4 inputs and 2 output) or 2 input and 4 outputs (2 input and 4 outputs), supporting Bi-Directional o Switcher.The passive RCA switch has a sturdy construction, all metal, beautiful appearance and reasonable .Simple operation, Plug and play, easy to use, no external power required.Connect the RCA output cables of your different home o types of equipment to the RCA input on equipment (on back). Turn the knob on front panel to switch different o source .color:BlackMaterial:plasticPackage Contents:1 x Bi-Directional o SwitcherOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.