Got an AD-20 and trying to figure out what else I need. It has a toslink out and I thought I could get a toslink adapter and an optical cable and be fine. However, I read the JB3 archival info. and it said that I might need a digital signal converter for it to be bit perfect...do I really need something like a c02? It didn't specify if I would or not...just says that some will need one.