Difference in sound between copper and silver digital cables?

There is no "warmer sound", "more depth" , "more whatever" in digital audio. All you need is to have every send bit being received correctly, once you reached that goal there is nothing more to achieve even if you spend a fortune on your digital cables.

You tell em danip!

Just one question: did you go to sleep in 1980 and only just now wake up? Because, hate to break it to you, but perfect sound forever? That was marketing. Its not really perfect. Sorry.

Actually, as I’ve oft written on these fora, once the data leaves the player it’s too late. The damage has already been done. In fact, the damage to the data is done as soon as the laser beam strikes the metal layer. It’s all over in a billionth of a second. All the King’s horses and all the King’s men couldn’t put Humpty Dumpty together again. 🍳

How do anyone really know that your coaxial is 75 ohm and your balanced dito is 110 ohm?
My guess is this also affect the outcome (aka what you hear)
Never seen any verification on the cable that it's actually tested and verified.

RE: ...

All you need is to have every send bit being received correctly

And there lies the problem !!!

My understanding is...

With SPDIF, Optical and USB there is no way to know IF the data stream RECEIVED is identical to the data stream SENT

Ethernet is different - data is sent in "packets" together with a CHECKSUM - if the CHECKSUM calculated from the packet received is not the same the checksum sent with the packet - then the packet is resent until it matches. 

So - if there are errors in the SPDIF, Optical or USB data stream - the erroneous values are NEVER detected and hence, "interpolated" by the DAC to a best approximation of what was sent.

So apply these "Approximations" to L and R channels and what will often result is a phase differences between the channels, which will alter the image, change dynamics and degrade the overall sound

So getting a GOOD SPDIF, Optical or USB cable actually DOES improve  sound quality.

Regards - Steve