The DI Monitors measure well. They aren't perfect, but in general, even other reviewers say they look good when looking at the Stereophile measurements.
The bigger question is what happens when you add in all the other Drivers in the DI Towers and measure the complete system? What about the designs where he has 2 Tweeter Arrays?
There was a point where New Record Day was doing Tekton Double Impact... they had a complete meltdown between NRD and Eric at TD. You can't even find references to it now... (Though maybe with a deeper dive and some creative use of wayback somebody might find the info...
FWIW, this is the only evidence I could find of the situation:
If the title is too editorialized on my part, I apologize. This is from the review channel on Youtube called New Record Day. The reviewer's name is Ron. A good deal of this wacky drama is found in the comments. It kind of amounts to a "he said/he said" scenario, but as you scroll down Eric...
audiokarma.org
Accusations of pay to play, bad review, a lot of back-biting and probably threatened legal action.)
But at the time, NRD pulled their measurements from the web. I hadn't seen them, but Ron did find some issues. There was a "phone Interview" that was posted sometime after where the two attempted to "clear the air" and during this conversation Eric admitted to finding a problem in the XO and fixing it...
But no new measurements.
I was really interested in Tekton when I was shopping in 2018. I was planning to go out to Utah and audition their gear. Eric was cool to talk to, and we did have several phone conversations, even him taking time after hours to chat briefly. He impressed me in his passion for what he does, and in what I will call his innovator spirit. I do not necessarily think that his stuff is gimmick, however I was left with some questions and mounting concerns as our plan to meet got closer. In short, there were certain topics he would dodge... specifically around measurements.
I do hope someday to hear some of his designs.
Another big part of cancelling further auditions was that I heard
my Speakers: I fell in love instantly with the sound.
I bought from Dennis and Philharmonic Audio. (Possibly the exact opposite spectrum of what Tekton is about.) I have never had a second thought about that purchase.