I played with a keyboard player years ago and we were out of tune. I was OK with my tuner and when I checked his keyboard it was sharp. He didn't know there was a pitch control on it. Thus, soon sorted out.
I've tried the E442 1/2 tuning but couldn't get on with it as I found the strings were tighter and I seemed to lose a bit of sustain.
Just me though, everybody else seems prefer it. It actually makes sense as it is a compromise around the 440 datum value of A and evens things out with the other strings.



