2-In/2-Out RCA Stereo Audio Switcher Effortless setup and simple operation. Just a light press to switch devices; highly useful in specific situations. Plug and play with no external power or software required; does not affect audio quality. Supports analog signals with a maximum input/output of 2V p-p. Input and output frequency range: 20Hz ~ 20KHz. Utilizes standard audio cables with transmission distances up to 8 meters for both input and output. Compact and super-small size, easy to place on your desk or in your office. Super-small size: 78 * 50 * 20 mm / 3 * 2 * 0.79 inches. Audio Switcher Functionality: Select audio input between 1 and 2 with the 1/2 switcher, outputting to one device. Select audio output between 1 and 2, receiving from one input. 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, TV 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