4 Port 3.5 mm Stereo
Audio Switcher: Bidirectional switching Splitter Audio Sharing active speakers and headphones.
Method 1: Connect 4 audios to (IN/OUT)A/B/C/D, use the 4 channel switch knob to get an output..
Method 2: Connect an audio to IN/OUT, select an audio output between (IN/OUT)A/B/C/D. (The output can be switched between speakers and headphones). 4 channel switch knobs, fully isolated independent circuit, make sure that each signal is not affected by the other three channels.. Plug and play. No External Power Required. Won't affect the sound quality!.
Note: Does Not Support Microphone.