"DDC Equivalent" function should be done right before the dac conversion with the shortest signal path inside the same box.
I think it was the Denafrips dudes that wanted to sell you an extra box...and then you’ll string it all together with some cable and achieve a sonic miracle...or that’s what they said.
There are some other clods hyping up/selling separate clocks or whatever....Such a signal should never pass through a cable like that...
The digital front end is far more important—just like the DAC. The Wiim Ultra sounds fine, but only fine. I owned it for a long time, but it won’t be considered a ‘decent’-sounding streamer (using digital out) unless it is paired with a good DDC. If you really aim for budgetary gear, get Node Nano instead.
I later acquired the Volumio Rivo Plus, which is in another class above all budget streamers, including the Ultra, iFi Zen, and even the Node Nano. Don’t just take my word for it—cross-check with professional reviewers such as Hans, Tarun, iiWi, Passion for Sound, and others.
The clock and the cable are also critical for achieving true audiophile-grade sound.