It's a cable with RJ45 connectors at each end. Rather nice ones, too, without that stupid plastic clip that catches on everything when you are trying to pull it clear of the cable tangle which is an essential feature of any high end system (the tangle ensures random cross talk which is self cancelling, thus giving unaffected transmission where neat, parallel cables would be subject to all sorts of interference with each other. An additional feature of the cable tangle is the dust ball (keep at least one cat) which adds an extra level of shielding.
Wait. I've got lost... Let me try again...
It's a cable with RJ45 connectors at each end. It doesn't actually say that it is an ethernet cable, or claim that it conforms to cat-this cat-that or cat-the-other standards. It might even be utterly useless for networking!
Anyway, it has a smart cover, with blue stripes, that has to be worth $500, no?
But, the best news of all, is that Denon's US site lists it as a discontinued product. Perhaps they found their customers were not as stupid as they hoped? :lol: