Even considering all the awards earned by the original Tellurium Q Ultra Black speaker cable, this new version delivers an entirely new level of performance—immediately apparent from the very first seconds of listening. There is greater detail, improved clarity, and a more organic presentation, all while remaining unmistakably part of the Black cable family.

The first listeners to hear the new cable were, to put it mildly, astonished.

Old Tellurium Q Ultra Black
“Tellurium Q Ultra Black is the cable we wanted to make from day one. We handed our UK distributor a prototype that looked more like a fireman’s hose than a piece of audio engineering—heavy, stiff, and, frankly, an unattractive brown experiment. ‘We’ll give it a try and take it to a few dealers,’ they said, clearly sceptical.

Later that day, we received a call from our stunned distributors at Kog Audio: ‘What on earth is in this? We’ve never heard anything like it.’

They trusted that the production version would be dramatically thinner, more flexible, and far better looking. On that basis, Kog Audio placed an advance order the same day—without seeing or hearing the final model—saying, ‘If it’s even a quarter as good as the prototype, it will blow people away.’

We believe the production version surpasses the prototype.

At first glance, you might mistake the Blue Diamond and Ultra Black for the same cable with different printing. But once you connect the Ultra Black to your system, any doubt disappears—the Ultra Black operates in an entirely different league.”