The HTC Vive Cosmos Elite is practically the VR flagship of the manufacturer. At this point, you can purchase it for slightly less than 950 Euros (~$1147; $899 in the US). Just like the first Vive, it uses external Lighthouse tracking, which works significantly more accurately than the inside-out headsets, which are wireless and easier to move around in. As a VR newcomer, I am stepping into fantastical as well as virtually recreated worlds to evaluate what the future has in store in terms of immersion and what still needs some improvements.
https://www.notebookcheck.net/HTC-Vive-Cosmos-Elite-Detailed-Hands-On-Review-Elite-of-VR-headsets-but-still-not-problem-free.509022.0.html
I regards to the headphones cable it seems your review unit might have had the headset removed at one point.on my unit there is a cable route located under the forehead peice.