RCA lotus interface multi-channel audio source input mixed output audio switch-free. Can connect several audio sources at the time without affecting each other, and can be mixed or output separately; supply DC 5-19V, it is best to use linear supply, switching supply is easy to produce AC sound;With gain, the RCA output port is about 2 , and the headphone port is about 4 .When you have multiple audio devices need to share the sound or amplifier, several devices can be connected at the time, which output is used, which is convenient and practical without switching.Input and output are stereo. RCA interface multi-channel simultaneous input and output.Material: plasticcolour: blackPackage Contents:1 x Audio Switch SwitcherOnly 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.