3.5mm 4-in/1-out/1-in/4-out bidirectional switcher, stereo switcher, 3.5mm headphone amplifier

 

 

4-Port 3.5mm Stereo Audio Switcher: Bidirectional Switching Splitter for Audio Sharing with Active Speakers and Headphones

Method 1: Connect the four audio inputs to (input/output) A/B/C/D, and use the 4-channel switch knob to obtain the output;

Method 2: Connect the audio to the input/output and select the audio output between (input/output) A/B/C/D (output can be switched between speakers and headphones).

A 4-channel switch knob completely isolates independent circuitry, ensuring that each signal is not affected by the other three channels.

Plug and play; no external power required; will not affect sound quality!