It's funny to see the simularities and the differences between the Behringer MS-5 (on top of the keyboardstand) and my old Roland synthesizer on the stand next to it.

I suppose the tuning problem if I combine my old synthesizer with the new one has to do with the controlvoltage. The MS-5 goes down to the end of my 88 key midi-keyboard, so this gives a higher controlvoltage from the keyboard. I suppose the lowest controlvoltage of the Roland is somewhere at the beginning of the keyboard, so in order to get the right controlvoltage, I have to tune down the Roland synthesizer, to get in line with the lowest key of my big midi-keyboard.