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Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

RE: Long S/PDIF cable

Both answers are correct. There are "sweet-spots" for all digital cables, even I2S and Firewire.

1) very short, like under 8" so that no transmission-line effects occur during the signal transitions
2) medium length, like 1-1.5 meters so that the reflections occur AFTER the edge transitions

All other lengths can be problematic. The optimum length depends on the risetimes.

See this analysis:

http://www.positive-feedback.com/Issue14/spdif.htm

As for high-quality USB cables, they are beneficial in certain cases. With a properly implemented async interface, they have little or no effect.

Steve N.


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  • RE: Long S/PDIF cable - audioengr 12/14/0911:58:43 12/14/09 (0)

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