SPDIF vs. AES/EBU Sound Quality?

I agree with mahler123's above comment .

In my particular case , I have a Mojo EVO DAC connected to a SimAudio 260DT transport , I found that shifting to the AES connection on both brought an uptick in SQ from SPDIF. I don’t stream so I have no experience with the USB connection vis a vis the AES or SPDIF

I2s/IIs

For what it’s worth, I recently bought a Simaudio Moon transport to pair with my Moon DAC. I called Simaudio and asked if I should upgrade to AES/EBU or keep using my current SPDIF cable. Their reply was “spend the money on music.”

I will mirror opinions above.  Any S/PDIF interface that does not use a true BNC connection is compromised.  If you are unfortunate to have RCA connections for your SPDIF, the best results you will get is if you use BNC cables with BNC-to-RCA adapters.  If you just use RCA cables, even the best SPDIF cables will have compromised high frequencies.

I just switched from a digital rca cable to an AES/EBU digital cable and it’s slightly louder, but I’ll give it some more time and a/b before I’ll give you the complete answer.

JD