Gustard U16 USB Digital Interface

The U16 result is actually quite bad, high jitter by any standard.

This U16 has been measured on ASR. The result is not bad but also not terrific. I used it for a while found out it has similar performance as the internal USB interface in the Chord Qutest, but noticeably better than the Allo Digione's coaxial output. I also found some bugs in this thing's firmware. I will not recommend this product. Now I'm using the Singxer SU-2, not because it offers better performance, but because I need it to feed data to Titans Audio Helen reclocker.

Well you've just exposed your ignorance of the entire field if you think I'm listening to my digital audio through an analog to digital converter as cited in the article you posted. It appears you don't even have knowledge of the basics of audio here. So why are you picking fights in an audiophile forum? We use digital to analog converters to listen to music. I do use analog to digital converters when I record music, but I've chosen one with a reference quality clock, because today (10 years after the article you point to - which is eons in digital sound reproduction technology years) the effect of jitter is well appreciated. But the guy in the article you quote does not even listen to the difference in sound. Yet he makes a claim about how they "must" sound. If you live in NYC come on over and listen for yourself! That's where the proof point is.