Hey, I traded e-mails with Kevin Halverson a while back. His comment was that the original 9 would not do CD-R's. Are you (Narrod, I guess) saying that the native 9 Signature's will? I read in the Ultimate Audio review that the 9S uses a Matsushita transport, which makes it possible since it's probably the same transport/pickup used by CAL in the CL-2500.
