Lornecherry, with your SCD-1, you will feed the digital out for Redbook to the TacT for RCS and then either use its DAC or go to an outboard unit. But for SACD output, you don't have that option. You either need the A-D module in the TacT or you need to bypass the TacT altogether and go straight to your preamp. Same with any other analog sources you have.