Passive TRS splitter and tap tempo control

The MXR Split + Tap is a compact footswitch that combines a passive TRS splitter with a responsive tap tempo control, all in a single compact-yet-robust unit.

Want to direct your sound to two different places, like separate amplifiers or recording equipment? Are you looking to combine two signals into one? The Split + Tap has you covered thanks to a TRS input and Left and Right outputs, all passive, allowing you to split your TRS signal to mono L/R paths or combine stereo L/R paths into a TRS path. The Split + Tap also allows you to adjust the timing of your effects or toggle their parameters on the fly with a momentary switch that responds quickly to your touch.

https://www.jimdunlop.com/mxr-trs-split-tap/