did a test this weekend on an Auralic Aries streamer with its USB vs SPDIF on a blu2/Dave Dac
The SPDIF sounded much better, less glare on vocals and more musical too.
quite strange as it’s not even the USB input on the Dave that was used it was the one in Blu2 upscsler
the aries has a linear power supply
I’m somewhat surprised as I thought the USB should be better....?