Quite intriguing and enlightening I'd say.
Amir measured Zero:2 and found it to be quite compliant to the IE Target minus some treble. And on squiq.link you can find graphs that says Delci measures quite similar to Zero:2.
View attachment 364864 View attachment 364865
So you'd presume Delci would have good compliance in bass and mids as well, and maybe a bit too much treble, but nothing unmanageable. At least I did. And that's why I bought them. And at first they were fine. But after a while I realized something is not right. They sounds weird, a bit bloated and playing with ear gain / treble is not fixing it. A few days later, I gave up, and pissed with IEMs again, went ack to my trustworthy headphones.
A few days ago, I found the below graph over at head-fi. And this is a much accurate representation of how it sounds to me. Bloated and weird.
View attachment 364867
https://www.head-fi.org/showcase/kefine-delci.27111/reviews
I am not upset about the purchase, they are very comforable and with EQ, they sound good. But I no longer trust measurements on squiq.link now, even when they are referenced to a known IEM.