This passive TRRS box makes it easy to switch between two devices to one headset, or connect two TRRS headsets to one source and switch between the headsets.  

Can be used with your car AUX input to switch between two smartphones to car audio, or used for further switching possibilities. 

* Audio switch for 3.5mm (1/8") audio jacks. It can be used in two directions:  2 IN 1 OUT & 1 IN 2 OUT

* 2 IN 1 OUT: Connect with two audio sources (example: computer and TV), then connect with one output (example: speaker). The A/B switch pot is for selecting one of the audio sources to be routed to the output.

* 1 IN 2 OUT: Connect with one audio source (example: mp3), then connect with two outputs (example: headphones and speakers). The A/B switch pot is for selecting one of the outputs (2 outputs are not simultaneous). 

* Microphone headset also compatible: This box works with any four-segment (TRRS) audio jacks, means that if you plug in headphones with a built-in microphone, the microphone will work through the switch. TRS also Compatible.

* Built in mini size aluminum chassis, looks nice and durable. Passive switch that does not need power supply. 

Brand: SPRODIO

Model: M201

input/output socket: 3.5mm (1/8")

Item Dimensions: 44x50x23 mm

Net weight: 50g