⭐ 【2(1)-IN-1(2)-OUT】The RCA Stereo Audio Switcher supports two-way switching:➊ Use the (IN/OUT) 1 or (IN/OUT) 2 switch to select an audio input between 1 or 2 to get one of the audio outputs;➋ Use an IN/OUT input, choosing an output from (IN/OUT)1 or (IN/OUT)2 | ⭐ 【Plug and Play】The RCA Stereo Audio Switcher is designed to be plug-and-play and easy to use without any software or drivers | ⭐ 【One Key Mute and One Key switch】The RCA Stereo Audio Switcher with one-touch mute and one-touch switch buttons will quickly meet your needs | ⭐ 【Metal Case】The RCA Stereo Audio Switcher is designed with a metal casing to ensure high quality audio transmission and durability | ⭐ 【Compact and Portable】Designed to be small and portable, the RCA Stereo Audio Switcher weighs only 4oz and can be easily carried and stored anywhere, perfect for travel and mobile use | ⭐ 【High quality Analog Signal】The RCA Stereo Audio Switcher supports up to 2V p-p for left and right channel analog signals and has an i/o input/output frequency range of 20Hz-20k Hz. | ⭐ 【Widely Compatible】The RCA Stereo Audio Switcher is compatible with a variety of audio devices such as MP3,smart phone ,computer,ipad,speaker and headphne,etc.