Let me explain how I have used the SD2's. The first was used with a Midisport interface to play SMF's from my laptop. The second was controlled by my Axiom 61 controller. The SMF's were of better quality than my Echo soundcard and my Technics Kn7000. It was close to my Roland G70, but not quite(my subjective opinion only). It being multitimbral,it played all SMF's fine. Please note that I only use a controller to play lead sounds, which are excellent. My arrangers have not been used with the SD2, so I cannot say. I can tell you that LSB is not used, only MSB and program #'s. Rikki has more experience with other kb's.
Bernie

[This message has been edited by Bernie9 (edited 07-17-2009).]