Originally Posted by Mudge
AES/EBU using XLRs is 110 Ohm. AES/EBU using Cat 5e is 100 Ohm.
AES/EBU type I is 110 Ohms, the spec allows for +/-20% so 100 ohms will work, but so will 88 ohms and 132 ohms.

The point is that AES/EBU is so robust you can run it over pretty much anything and it will work. The impedance mismatch is there, but it makes no difference.

I've run it over a 3 core 13a cable without any problems, there are tales of it being run over a piece of wet string through a fish tank and it still working...

I think we're both cable agnostic, we'll believe if we're shown proof.