Hello, PrairieOrganGuy here. I am a journeyman organbuilder just beginning to make my way into MIDI. (It is a lot easier for me to troubleshoot the "for trade" stuff...but the prices are getting so outrageous....) Anyway, I have two organ keyboards that I wish to MIDIfy to run Hauptwerk. If I have read everything right, this is the basic parts list: One core module Five input modules Wires, Etc First, did I get the above right? Second, do I need to use matrix wiring for these? Parallel is much simpler to work with (and troubleshoot) How do I connect the input modules? Can I just run one wire from each key to an input module? Am I even asking the right questions? I have spent several days reading and reading the ucapps site, my head is swimming. Please be gentle.... PrairieOrganGuy PS the picture is of an instrument that went from electromechanical to full digital switching. The parts in the console alone cost around $4,000...there is another board in the attic that also cost about $4000. Now you know why I am really interested in the MIDIo128...