USB signal timing goes mainstream. Just an FYI


Now, to be fair, the issue here is rates that strain the "eye" and the ability to recognize the 1-0-1 transitions.  But in the analog domain the precision of those transitions affects Jitter and therefore half of the Cartesian plot that is PAM..  'later

https://www.electronicdesign.com/industrial-automation/article/21177252/kandou-11-myths-about-usb-re...
itsjustme
i should clarify; i presume you mean DAC as master clock, with the ability to terminate, buffer, & re-clock, whcih is what i do and what i believe meitner does.
Any well designed DAC's USB  is asynchronous and uses its Clock. Retimers are different than reclocking and are useful for high speeds and long runs nothing home audio needs to be concerned about. Noise and jitter are not really a problem anymore as even well engineered DACs for a few hundred bucks these are well below human audibility.
Your basic argument is "you cant hear it". This is quite different from "it makes no difference" and the audibility is debated by many. Including me. I cannot explain it (and noted that above), i understand precisely what you are arguing, but neither you nor I, in fact, know what is audible. We have our opinions. Just sayin’.

The hearing range of humans isn’t opinion. If the DAC can produce a SINAD of -115db which even some $150 DACs can manage it would be interesting to know of someone who can hear distortion or noise of the DAC over that of the amp and speakers, that would truly be amazing. Just sayin’
The deeper meaning of any of this post continues to elude me. I can though report that adding a 10m clock to my dac (Antelope Zodiac Platinum) connected via USB to an Innuos Zenith Mk3 results in noticeable improvements in resolution, impulse rendition and spacial imaging, presumably as a result of better timing on the USB connection as well as the actual d-to-a conversion. (This differs from USB reclocking since it actually addresses the dac‘s own clock and thereby indirectly the USB link in asynchronous mode). Timing accuracy in any case has nothing to do with RMI/EFI and ground level noise rejection by the dac. That in turn seems to best be achieved by passive filtering and galvanic isolation. And by the way: the choice of the clock’s power supply and power cord as well as clock cables has major impact on SQ.