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In Reply to: RE: Ok Far Enough posted by Tony Lauck on April 12, 2012 at 14:16:13
"the jitter on the cable from the transport to the DAC would not affect the audio quality"
True, but the cable still might affect audio quality due to commmon-mode noise or RFI differences from one to the next.
I practice, this is what happens, and I can prove it with a USB common-mode filter.
Follow Ups:
Common mode noise on the UBS cable shouldn't couple into the DAC. It should be blocked by the USB receiver circuitry and the buffering circuitry inside of the DAC that connects the USB receiver to the converter.
As to RFI, the cable might act as an antenna and radiate EMI. The DAC and other audio components and cabling should suppress this interference which isn't in the audio band.
In either case, if the cable affects the sound quality it is not the fault of the cable, it's due to a defect downstream of the cable.
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
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