Hi. I might add that it's not 5 Volt but a 40 mA current source with a max voltage of -14 Volt if left open or a load more than 350 Ohm. It's from the negative supply because then it does not "melt" the hihat pad (if plugged in by mistake) which is supplied with 3.85 V and has a protection diode in series. But hanging a piezo on there is not recommended.
God jul. Deve.
God jul. Deve.