Given that you are also using a QB-9 DSD, I think your reply tells me what I wanted to know. Thanks.
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AQ Diamond USB Cable with Ayre QB-9 DSD?
Would a 2.5' AudioQuest Diamond USB cable add any sonic value connecting a Senore ultraRendu roon endpoint to an Ayre QB-9 DSD DAC, or does the optical coupling of the DAC obviate that value? I'm using an 18" Cardas USB cable now.