Alright, this might be a stupid question but I believe if ya don't know ask someone who does. If your setup looks like this..
Mic
Preamp
A/D
Audio Interface
Do you get a better sound using the Spdif into the interface or using the AES out of the A/D into the line in of your interface? Forgive my ignorance but I'm old school, use to XLR's all the way around. Just want the best sound possible. Thanks.