Features:<br> Easy installation and simple operation.<br> Only need to lightly press to mute the device; very useful under special conditions.<br> Plug and play; No power supply and other software required; Won't affect sound quality.<br> Analog signal maximum support 2V p-p input and output.<br> Input and output frequency range: 20Hz ~ 20KHz.<br> Use standard audio cable, input transmission distance up to 8 meters, output transmission distance up to 8 meters.<br> Compact and super mini size; Easy to place and suitable for your desktop and office.<br> Super small size: 78 * 50 * 20 mm / 3 * 2 * 0.79 in.<br> 2(1)-in-1(2)-Out RCA Stereo：<br> 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.<br> L / R Stereo Audio Bi-Directional Switcher：<br> This is a bidirectional switcher for L / R channel audio ports. L / R<br> Audio selector designed for customers having several audio sources and outputs.<br> Main functions:<br> ① Select audio input between 1 and 2 with 1/2 switcher and get one output;<br> ② Select audio output between 1 and 2 to receive one input;<br> How to use:<br> ① Connect two audio sources (like CD player/computer) to 1/2 ports and one audio output (like speakers) to IN/OUT port;<br> ② Connect one audio source to IN/OUT port and two audio outputs to 1/2 port;<br> Specifications:<br> Application: Computer, Microphone, Monitor, DVD Player, Projector, Television<br> Type: Audio Line<br> Connector-B: RCA<br> Connector-A: RCA<br> Model Number: Audio Bi-Directional Switcher<br> Gender: Female-Female<br> Package includes:<br> 1* L / R Stereo Audio Bi-Directional Switcher<br> 1* L / R stereo cable（1.5m）<br> 1* User manual