Speaking about using two keyboards one above another I personally have a problem with that because if a keyboard is just a little higher or lower my comfortable level I can’t really use it to the fullest – playing something a little bit complicated starts to feel impossible. When I’m sitting at my comfort level (which some people consider too high) I feel more in control of my fingers and a keyboard (the same goes when I played an acoustic piano for 3-4 hours per night).
Hi, me too. I’m used to sitting at a particular level. My husband actually modified one of my old keyboard stands a few years back for my old psr 1500. It sat vertically behind my PA800. I used the PA 800 as controller for psr. The only part visible on psr was the buttons and screen. Sort of got use to pushing them in front of me instead of from top.
The pa3x didn’t work as controller because I had a Paas speaker which made it a bit to deep for button pushing on the psr. Would work with a controller keyboard, but not sure I would want to slide a brand new SX900 into the converted stand.