AES/EBU vs RCA s/pdif into dac, RCA analog out

Hi, this seems like it may be a dumb question, but here goes. If you feed the digital signal into the dac via AES/EBU and then use the dac's analog RCA outputs to your preamp (preamp only has RCA input), would this result in a better sound than using the dac's RCA s/pdif digital inputs? Or would the results be exactly the same? I hope I'm making this clear: AES/EBU vs RCA s/pdif coax input in while  using analog RCA out.  I don't currently have an AES/EBU digital cable, or I would just try this out.  I am considering purchasing one just to see if there's any difference. Thanks for any advice.