It can also be used this way: 1 RCA input, 3 RCA outputs to 3 different amplifiers or active speakers 

Features: 
(1) Switch different input or output conveniently, with audio rotary switch, switch smoothly.
(2) No need power supply, plug and play directly
(3) Circuit design does not affect sound quality
(4) Made of FR4 PCB circuit board
(5) Mini size compact audio splitter for home audio

Instructions:
simple operation, easy to use
Connectting the output cable of your home audio equipment to the RCA input of our equipment (on the back). 

The knob on the top of it can easily switching the audio source output of different equipment, solving your troubles of repeatedly plugging and unplugging the cable, and enjoying music enjoy life.

There is a red button on top for the mute function, there is no output when press it.

Specification: 

Size: 115*65*45mm

Weight: 100g