The ass part about jacks is that there is apparently 2 standards for midi over jack, with various gear manufacturers split over which one to use. You can make device accept either but it's pretty rare sight.
There are actually 4 ways manufacturers do it. Something like the Disaster Area Designs[1] MIDI Box is a necessity once you start dealing with guitar effects pedals.
There are actually 4 ways manufacturers do it. Something like the Disaster Area Designs[1] MIDI Box is a necessity once you start dealing with guitar effects pedals.
[1]: https://www.disasterareadesigns.com/shop/p/midi-box-4