2-In-1-Out / 1-In-2-Out Speaker/Headphone Switcher Box: Easily toggle between two audio inputs without the hassle of repeatedly plugging and unplugging audio cables, reducing the risk of potential damage to your equipment caused by frequent connections and disconnections. A simple audio switcher can effectively prevent this wear and tear on your audio gear Compact Size: Measuring at 2.6 x 2.5 x 1.1 inches, this switcher box boasts a small, compact design thats perfect for a wide range of audio setups, offering convenience without taking up much space Compatibility: This 3.5mm Audio Selector is specifically designed for use with 3-segment earphones. Please note that it does not support four-segment headphones Bi-Directional Studio Switch: Seamlessly choose your audio input between 1 and 2 with the 1/2 switcher and receive one output.