1. The three-channel input uses a high-contact reliability self-locking button switch for switching. When one of the buttons is pressed, the other switch automatically up and disconnect the circuit. 2. The dual-channel output XLR/ interface is a synchronous output, which is convenient for connecting the power amplifier and active speakers to achieve synchronous sound. 3. The switch adopts the L/R synchronous switching mode. All GND input and output interfaces are universal. The XLR switch adopts the HOT/COLD synchronous switching mode. The output is equipped with a one-button mute switch, and a set of 6.35 headphone monitoring output functions are added. Easy installation: The input and output are plug-and-play, and the installation is easy. The signal source can be switched losslessly, allowing you to enjoy a different listening experience. Mainly used to select and switch stereo signal inputs, share the output of one or more groups of devices, such as multiple stereo signal sources (TV audio, MP3 players, etc.). CD players, video games, mobile phones, tablets, computers, record players and other devices need to output to amplifiers or active speakers. The 6-group audio signal selection switch solves the tedious operation of plugging and unplugging multiple device lines. Just connect the device signal source that needs to be input to the switcher, and you can easily and conveniently select it. Color: Black Material: Metal Package Contents: 1 x Audio Signal Selector Switcher Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.