Usage Tips: rotary switch.Hot-swappable (no need to reboot computer).<br> Super mini size:Easy to place and suitable for your desktop and office.<br> Plug and play:No power supply and other software required; 't affect sound quality.<br> Analog signal maximum support 2V p-p input and output.<br> Input and output frequency range: 20Hz ~ 20KHz.Use standard audio cable, input transmission distance up to 8 meters, output transmission distance up to 8 meters.<br> Main functions:<br> ① Select audio input between (IN/OUT)A//D with 1/4 switch knob and get one output;<br> ② Select audio output between (IN/OUT)A//D to receive one input;<br> How to use:<br> ① audio sources (like CD player / computer/Phone/MP3) to 1/4 ports and 1 audio output (like speakers) to IN/OUT port;<br> ② connect 1 audio source to IN/OUT port and 4 audio outputs to 1/4 port.<br> Colour:black<br> Material:Aluminum alloy<br> Package Contents:<br> 1 x Audio Switcher Splitter<br> 1 x Audio Cable<br> Only the above package content, other products are not included.<br> 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.