and here another aspect related to power supply ,relates to sound quality ;
That is what I said, but I cannot stress enough that the quality of the clocking is greatly associated with power supply and ground plane currents, not to mention internal em/rfi. The inner workings of a DACreek havoc in those items, and it should be noted that the Weiss DAC202 uses a single clock with a PLL, and yet had the lowest jitterthey had measured to date at the time of that review. Point being is that Gordon Rankin's argument is theoretical. Actual applications vary greatly, and getting a good signal down a properly tuned and terminated connection offers a lot in relation to the harsh environment within the DAC itself. I am certain companies such as dCS would just put it internally if they thought they could provide better clocking by doing so. Even Antelope offers an outboard oscillator for their high end devices, further improving the performance of their word clocks. General Radio would put them in a shielded sub enclosure on the other side of the chassis in theirs to reduce interactions.
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