I have been using coax for digital connections. I was informed that glass Toslink could provide a better connection than coax, and that the limitation of most Toslink connections was the plastic used. I elected to try this. The difference is audible and not subtle. The coax simply couldn't compete (I tried three different ones, at varying price levels). There's a lot more information being passed through the glass Toslink. The glass Toslink I used is available for $29.99/ one meter on Ebay.