the whole jitter thing is nonsense in the context of something like an Ethernet cable since only the data is being sent, the packets only have to arrive 'fast enough', the timing doesn't matter.
For buffered data being sent and decoded, like via ethernet, the bits are the same on both ends, so I'm not sure what effect you would even make up to say it could change the output.
You can always use a $6k rubidium clock http://www.antelopeaudio.com/en/products/10m-atomic-clock if you really want to make sure your bits are synchronized. It's good enough for wu-tang!
For buffered data being sent and decoded, like via ethernet, the bits are the same on both ends, so I'm not sure what effect you would even make up to say it could change the output.