Hi everyone!
I measured moondrop crescent with Dayton imm-6 + vinyl tube coupler:
Here is the FR compensated for orathory1990's uSound target:
Here it is compensated for Harman target:
What I'm personally hearing - and I'm going to be very, very, very picky - is just a smidgen too much mid-bass and "body". With an EQ designed to compensate for the Harman target:
https://spion.github.io/compensatio...ion=170,-4.0,0.40;2450,3.0,1.70;5980,2.0,2.50
I'm getting a slightly thin sound. I'm not really a fan of the Harman target - it does sound very realistic in vocal/instrumental songs but thin otherwise.
The uSound target EQ compensation is minimal, and nicer!
https://spion.github.io/compensatio...ion=154,-2.0,0.20;2100,2.0,1.00;6000,2.0,2.80
Aside from the slightly excessive midbass, i'm hearing beautiful, inoffensive mids and low-highs, guaranteed to please people who are not fans of excessive 3K peaks; extremely smooth yet detailed treble; OK (sub)bass.
Onto the non-FR characteristics:
The soundstage is adequate for a single-dynamic-driver inear which has clearly been properly dampened to get a natural FR, but nothing too amazing. It is however better than my previous precise budget favorite, the Sony MH1(C). Build quality is really nice, the cable too (microphonics are not bad, but still a bit present).
Verdict: this little thing blows every budget IEM I own away, and will do well against almost anything up to the 150 USD range. I don't really mind the 2-3dB extra body, much more expensive headphones have a lot more of that, but if you want to be *extremely* picky - you will notice it. They have become my daily driver, replacing my best MH1C copy (I own 4, and only one of them has reasonable rather than excessive amounts of bass).