Easy installation and simple operation. Requires only a light press to mute the sound, making it highly useful in specific situations. Plug and play; no external power supply or software needed. Does not affect audio quality. Supports analog signals with a maximum input and output of 2V p-p. Input and output frequency range: 20Hz ~ 20KHz. Uses standard audio cables with transmission distances up to 8 meters for input and output. Compact and super mini size, easy to place on your desk or in your office. Super small size: 78 * 50 * 20 mm / 3 * 2 * 0.79 inches. 2(1)-in-1(2)-Out RCA Stereo Audio Switcher. Features an AB switch, R/L stereo audio switcher, and splitter. Includes a mute button and requires no external power. L/R Stereo Audio Bi-directional Switcher. This is a bi-directional switcher for L/R channel audio ports. Designed for users with multiple audio sources and outputs. Key Features: Select audio input between 1 and 2 with the 1/2 switch, outputting to one port. Select audio output between 1 and 2, receiving input from one port. How to Use: Connect two audio sources (e.g., CD player/computer) to the 1/2 ports and one audio output (e.g., speakers) to the IN/OUT port. Connect one audio source to the IN/OUT port and two audio outputs to the 1/2 ports. Specifications: Application: Computer, Microphone, Monitor, DVD Player, Projector, Television. Type: Audio Cable. Connector B: RCA. Connector 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.