Hey there. If it really is a Juno 60 mainboard (and it's fully populated!), it has dcb -- all you need to do is wire up a jack. I don't know how likely that is, though... If not, on the CHD ELEKTROSERVIS site referenced in other posts, they've got a circuit that you can can ostensibly wire directly into the 6's CPU to give it DCB control. I'm also a Juno 60 owner & occasional midibox builder that's thought about midifying le ol Juno. In my mind, Midi to DCB shouldn't be tough. Midibox should be able to *see* the DCB messages, since they're similar enough to midi... they're both chirping at 31250 baud, right?, so you wouldn't need any external circuitry to convert the speeds. At first it seems easy, because they both go Status byte, Data Byte, right? Then I stopped to think about voice rotation. eewwww. I *think* DCB transmits transmits all the voice voices in each key code block (anyone wanna confirm?). If that's the case, you couldn't just translate each incoming DCB note as a sysex block and translate it on the fly if you wanted any degree of polyphony. That makes the project much, much harder for a beginner like me. Enough to make it a nonstarter, even. It's still doable, but someone with brains'd have to do it. Note on/off is all dcb'll do you for on a Juno, btw. Patch change only works on the Jupiter, IIRC.