No two anything perform exactly the same, but to date difference from one SPDIF digital cable to another is not significant to me. Differences with many analog wires I try are. Many other things that have much more significant effects on the sound, in practice as well as in theory it seems, and are much better places for one to invest their time getting the sound just right.
Not to say all digital wires always sound the same....just that I do not hear enough difference to date in general to be concerned about it when things are already sounding excellent on the grand scale of things. My mistake maybe, but one I can live with easily.
USB digital connections is the one type I suspect will tend towards more noticeable variation in sound quality case by case depending on implementation, which is why I am happy I have mostly been able to avoid having to deal much with those to-date. USB, unlike SPDIF is not designed solely for audio, so many outcomes are possible.
WHen the time comes, I will shoot for an asynchronous USB implementation where DAC-side clock rather than general purpose computer manages timing and required bandwidth reliably and use a USB wire of good quality from a reputable maker like I do with most things and expect that to do the job quite well.
Not to say all digital wires always sound the same....just that I do not hear enough difference to date in general to be concerned about it when things are already sounding excellent on the grand scale of things. My mistake maybe, but one I can live with easily.
USB digital connections is the one type I suspect will tend towards more noticeable variation in sound quality case by case depending on implementation, which is why I am happy I have mostly been able to avoid having to deal much with those to-date. USB, unlike SPDIF is not designed solely for audio, so many outcomes are possible.
WHen the time comes, I will shoot for an asynchronous USB implementation where DAC-side clock rather than general purpose computer manages timing and required bandwidth reliably and use a USB wire of good quality from a reputable maker like I do with most things and expect that to do the job quite well.