I received an answer from Marcello Colo on Youtube regarding SD 40, MidjPro and SD 7:
Quote:
"Just to be more clear ;-) MJ Pro and SD 40 have same sound generator
but on Sd 40 ther'not DJ function and a Player less . SD 7 and MJ Pro
carry same wave table but ther's a bit difference on Style section and
else . SD 9 have a improved Sound generator which come from SD 7 plus
new wavetable ( Pianos strings winds and son on )"