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Re: You're assuming a perfect DAC
abraxalito   11/19/2013 7:19:03 AM
Galvanic isolation is a step in the right direction - however its only providing perffect isolation at DC. Check the interwinding capacitance of your S/PDIF transformer - the ones with the best isolation sport a figure <1pF. If yours is higher you still might gain improvement in fitting a CM choke to your cable (or clamping on a ferrite). Also check to see if internally there's a dedicated ground wire going to the digital input termination (75ohms) from the mains trafo secondary. A lot of DACs just use their internal groundplane to carry the CM noise current, impacting the sensitive analog circuits using that groundplane as their 0V reference.

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Re: On a more philsophical note.....
MeasurementBlues   11/19/2013 9:15:10 AM
'I currently know of no way for a digital cable to make an audible difference'.

Too long for a title, but perhaps in the text. We agonize over titles because they must be short, yet have enough info to get you to read.

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Re: On a more philsophical note.....
abraxalito   11/19/2013 8:41:51 PM
How about a question with the same word count - 'Can digital cables be audibly different?' ?

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