And yet they're reinventing open headphones and calling it revolutionary? Only a little sarcastic.
And they didn’t say “revolutionary” or similar anywhere, as far as I can see.
These are simply open backed headphones that use a different method of setting the distance between the driver and the ear. That's all.
Here's a whitepaper on the driver technology they're using: https://www.tectonicaudiolabs.com/wp-content/uploads/2019/02...
This is the first time I'm aware of anyone has used this class of driver for headphones, and they have novel properties that support their idea of a spaced nearfield monitor rather than an open or closed back cup.
There's no seal on or around the ears like traditional headphones. Additionally, they sit much farther away from the ears compared to existing headphone designs.
In all likelihood they've had to tune things to a very fine degree, both in dsp and in the physical driver design. Because these are used in the near field, with the specific intent of leveraging acoustic cues from the outer ear, they won't be able to just reuse a reference curve developed for headphones or speakers.
They have a dummy head for binaural measurements, so this isn't a particular hard thing for them to calibrate.