Inasmuch I neglected to get rich in the 80s (silly me) I have had to do the organ thing one step at a time, and got the T787 in the Internal configuration. It sounds great, but would sound even better if the sound were coming from somewhere other than my somewhat Scarlatti-proportioned midriff. I am assuming that when finances (and marital tolerance levels) allow, my next step is to add RSS rear L&R speakers. What I'm not clear about is whether the instrument can in time go entirely external, and how many channels it will ultimately support, what gear is needed, etc. All advice gratefully received. Paul Marshall