I can tell you from experience that you DO NOT want to use a splitter with the JB3. When I was running two minidiscs I was running an optical splitter and I would start the one minidisc, and then when it was time to change discs, I would let the other one run so that I didn't miss any of the music. I could also let both of them record at the same time with no troubles. Then I got the JB3 and I thought I would run the MD as a backup in case something happened to the JB3. Well the MD records great, the JB3 is full of static and pops. I don't know why it does this, but just a heads up. The last thing you want to do is give someone an optical patch, and then you end up with a worthless copy.
Gary