Here’s the measurements of the Thieaudio Monarch vs the Clairvoyance I have here. Keep in mind this uses the GRAS RA0402 coupler and not the 0045 equivalent commonly seen. The RA0402 reduces the coupler resonance the 0045 has at around 8khz but it also goes a bit too far, so just keep in mind that these shouldn’t be compared to those done on other rigs.
Interesting to note here as well is that this Monarch has a more gradual slope for the upper bass - notably better than the one Crin measured. I don’t know exactly what’s responsible for this, we both uses the same source (and I’ve tested this on multiple low impedance sources with the same result). Also note that this Clairvoyance has more treble presence above 10khz. So maybe there’s some minor unit variation going on here.
EDIT - here’s the comparison video:
