S/PDIF yields *absolutely no noise floor* manning.

When using it with something like a guitar amp/speaker cab/effects simulator, it can really make a difference...

On top of that, use of the digital S/PDIF connect avoids passing your already digitized signal through a needless D-A and then the A-D in the sound device, which, as you should know, *changes* the bitstream. Usually for the worse. It also opens the door to needless clocking jitter problems.

Another good thing about using S/PDIF connect when available, is that it completely bypasses any possibility of the dreaded AC Ground Loop nasties of buzz, hiss, etc.

Here in my little home studio, any device that has S/PDIF output, that's the output of choice, every time. In my case that includes certain MIDI synths as well.


--Mac