To know what you can do with the Duet, all you need is the schematic.
Actually Kal, all YOU need is a schematic. For ME, it would be completely useless! I am not that "techy." I do know what I want to achieve though, and I know the reason why I2S is the better option - especially in conjunction with PS's new PWD. I wish I knew how to achieve the results I seek. I will, if it is within my financial means, have to rely on someone else's expertise.