I would think that your question really has to do with pre-amps, rather than cdp's, having multiple sets of outputs (many do).
But to answer your question, the Sony SCD-1 has one set of balanced and 2 sets of single-ended outputs and Sony DVP s9000es has two sets of single-ended outputs.
-IMO
But to answer your question, the Sony SCD-1 has one set of balanced and 2 sets of single-ended outputs and Sony DVP s9000es has two sets of single-ended outputs.
-IMO