4-Way 3.5mm Stereo Audio Switch Input Signal Source Switcher Selector Splitter Box with line Volume Controller?4 in 1 Out / 1 port . mm Switch with volume Wholesale Non-slip rubber feet allow it

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4-Way 3.5mm Stereo Audio Switch Input Signal Source Switcher Selector Splitter Box with line Volume Controller?4 in 1 Out / 1 port . mm Switch with volume Wholesale Non-slip rubber feet allow itAbout this item 4(1) IN 1(4) OUT 3. 5mm AUX audio selector designed for customers having several audio sources and outputs, simple to use, plug and play, no power supply required 4 in 1 out: Support up to 4 audio source inputs and select 1 audio source output 1 in 4 out: 1 audio source input,and 4 ports output can be switch to amp or active speakers or headphone (If you need 2 or 3 ports output to play at the same time, you need to press 2 or 3