Im running an E-MU 1820 that is connected to my computer through the sound card that came with it. It uses a wide cable that is similar in appearance to a LAN network cable. I can switch the settings through its DSP software to use either ADAT or S/PDIF. It still runs through the same cable even when I switch settings but I cant really tell any difference.

Im wondering if there is any advantages of using one over the other. I only record one track at a time with a single microphone (KSM27). What about the Khz should I stick with 44.1 or 96Khz? Im currently using 44.1Khz.