Does the PSR allow you to choose which Part sends on which channel?

That’s one thing that has saved my bacon on the BK-9 several times. You not only get to pick and choose which Parts (Keyboard and style/SMF) transmit, receive MIDI, and which channels you want it on, but you can store eight completely different full setups (MIDI Sets) and link them to each Performance (registration) independently.

This has made working with finicky outboard gear a lot easier to control live, when you don’t have time to faff about changing setups on the fly. For the home user, handy but not essential, but on a gig it’s a lifesaver!