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Copper vs Optical Fibre

Can anyone answer me (especially the equipment manufacturers) why copper connected components can have signal clarity and capacity to 32bit/768kHz, DSD 128, 256 etc, while optical fibre connections (toslink and the like) are restricted to 24bit/96, DSD over DOP, PCM if you are lucky to them up-sampled. In Australia, the National Internet being rolled out has very high up/download speeds on fibre is you can get it, and lousy speeds on copper. Why is optic fibre not used more extensively (between components and speakers if possible) as it does not suffer the maladies of copper connections?
128x128Ag insider logo xs@2xamg56
mattmiller's avatar
mattmiller
1,497 posts
 
It offers the WORST connection and the MOST Jitter...thats why. And as you pointed out its limited in resolution and bit rate. Utility companies love them because they are light weight and 100% isolated from electrical interference.

Matt M
amg56's avatar
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amg56 OP
887 posts
 
Hmmm....  so far so good. I can accept those explanations. If there is a (mild) expansion in self powered speakers, as per the new Dynaudio Focus 60XD, I would have thought there would have been a higher resolution on the digital side, but the copper cables to each produce a higher reproduction, according to the report. I honestly thought that optic cable would have the purist (albeit digital) transmission. It would certainly be cheaper than some of the big brand copper cables.
erik_squires
16,060 posts
 
@amg56 You might want to check out Meridian and see what they are offering lately. They have always been at the bleeding edge of digital, powered speakers. 
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amg56 OP
887 posts
 
@erik_squires I am not in the market for a set of digital powered speakers at this time. I put out the question because I didn't understand the "inner machinations of HiFi" such as jitter and so on. Slowly, as I read these posts, I am learning. It would be a game changer if the difficulties could be fixed.
erik_squires
16,060 posts
 
Well, I have read some measurements suggesting coaxial has better jitter reduction, but not sure how much, or that it is universal. 

This may be less important as DAC's in the last 5-8 years have much better jitter reduction overall than previous generation. 


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