Features: Easy installation and simple operation. Just press lightly to turn off the device; very useful under special circumstances. Plug and play; No power supply and other software required; Does not affect sound quality. Analog signal maximum support 2V p-p input and output. Input and output frequency range: 20Hz ~ 20KHz. Use standard audio cable, input transmission distance up to 8 meters, output transmission distance up to 8 meters. Compact and super small size; Easy to place and suitable for your desk and office. Super small size: 78 * 50 * 20 mm / 3 * 2 * 0.79 inches. 2(1)-in-1(2)-Out RCA Stereo: Audio Switch Audio Switcher, R/L Stereo Audio Switch Audio Switcher AB Switcher, R/L Stereo Audio Switch Splitter 2 x 1/1 x 2, with Mute button and no external power required. L/R Stereo Audio Bi-directional Switcher: This is a bi-directional switcher for L/R channel audio ports. L/R Audio selector designed for customers who have multiple audio sources and outputs. Main Functions: ① Select audio input between 1 and 2 with 1/2 switcher and get one output; ② Select audio output between 1 and 2 to receive one input; How to Use: ① Connect two audio sources (like CD player/computer) to 1/2 ports and one audio output (like speakers) to IN/OUT port; ② Connect one audio source to IN/OUT port and two audio outputs to 1/2 port; Specifications: Application: Computer, Microphone, Monitor, DVD Player, Projector, TV Type: Audio Cable Connection-B: RCA Connection-A: RCA Model Number: Audio Bi-Directional Switcher Gender: Female-Female Package Includes: 1* L/R Stereo Audio Bi-Directional Switcher 1* L/R Stereo Cable (1.5m) 1* User Manual