I had a lot of trouble measuring these to get consistent result for distortion. Saying this for full disclosure. I was eventually able to get consistent and repeatable distortion figures toward the last few days I had this unit. It was on loan from @ChaChaRealSmooth. I do think the measurements reflect certain things that I heard. I'll get into that a bit later.



Audeze LCD-3 2019 Frequency Response

SBAF compensation. Vertical line across approximates perceptual neutral.





Audeze LCD-3 2019 Traditional Harmonic Distortion Plots









Audeze LCD-3 2019 Alternative Harmonic Distortion Plots







In regards to how they the sound, compared the LCD-2C that was purchased a while back: more resolving, but lower quality lows. There has been talk for years about the consistency of Audeze headphones. I'm not sure Audeze as totally ironed out the issues.

Ears validate the measurements, not the other way. Well, sometimes the measurements keep us honest.