XLR cables are balanced they have a pos, neg & ground. The actual conductors vary according to brand and price point. Analogue XLR cables are 75ohms while Digital are 110ohms. The difference between analogue and digital is the resistance.
Digital and Analogue XLR Cables - Is There a Difference?
After swapping both around for many years the only difference I've been able to hear is that analogue sounded better than digital when used as an analogue cable but maybe that was because I was using a digital XLR because one of my analogue XLR cables had gone down. Not very scientific. The Digital cost much less too.
Is there a special conductor used for digital XLR? Both are 110 0hms.
A pair of Analogue XLR can cost the same as one Digital XLR.
I'd really like a definitive answer. THX!