4-Way Stereo L/R Sound Channel Bi-Directional Audio Switcher 1 in 4 Out /4 in 1 Out Audio Switch Splitter for Speaker _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ 4-Way Stereo L/R Sound Channel Bi-Directional Audio Switcher, 1 in 4 Out /4 in 1 Out, Audio Switch Splitter for Speaker _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ RCA L/R stereo audio switcher 4 IN 1 OUT or 1 IN 4 OUT._x000D_ Main functions: (1) select audio input between 1/2/3/and 4 with knob siwtcher and get one output; (2) select audio output between 1/2/3/and 4 to receive one input_x000D_ Suitable for multiple sources signal select or multi-room paralleled amplifier or active speaker distribution of the same signal playback. Use specialized audio rotary switch/Lossless device, easily switch between different audio in or out._x000D_ Stereo Switch Box with Signal Lossless, Sturdy Aluminum case Strong Anti-Interference, Compact Connector Distributor RCA L/R Stereo Splitter Boxes._x000D_ Plug and play, No power needed, Won't affect sound quality._x000D_ _x000D_ colour:Black_x000D_ Material:metal_x000D_ size:10.7 x 9.2 x 4.1cm_x000D_ _x000D_ Package Contents:_x000D_ 1 x Bi-Directional Audio Switcher_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ Note: Light shooting 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._x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_