- Sep 4, 2022
- Land of the long white cloud
That is exactly what the sole jitter plot I’ve seen of the R26 shows… lots of side spurs on an otherwise low jitter floor plot. To the extent it prompted the reviewer, Wolf (a character who makes lots of blunt assessments) to comment that he wondered if a Gustard did this intentionally to sell more of their external clocks like the C18.I wonder whether the R26 and many other DACs have spurs due to their internal clocks so external clocks can end up giving a better sound. There has to be a plausible explanation somewhere,,,,given the femto clock in the R26.
@camrector What is annoying is he didn’t actually provide a full x-axis zoom into the 12khz signal (despite titling the second chart 12khz zoom, as that one just zoomed out slightly on the Y axis to see the floor) that explodes out the centre spike so you see the level of jitter at closer offsets like 10hz and below (ie phase noise), like he did for that A26 plot I previously posted and marked up. I expect that, as with the A26, the low offset jitter would be soaring well above Amit’s theoretical audibility threshold of -115dB, potentially more so than the A26 given the sidelobe activity,
I have considered asking him for the true 12khz x-axis zoom plot if he still has it or can generate it from his files - it’d be interesting to see.
https://www.l7audiolab.com/f/gustard-r26/ Need to use Google translate.