The following is how the HiFiMAn Arya measures on the GRAS 43AG-7 and KB5000 (KEMAR Anthropometric Pinna). What I’m showing here is the raw measurement along with a few target curves. Note that the two Harman targets pictured below are consumer preference curves, meaning that they aren’t devised with the intention of matching the gain factors of the human ear (pinna, concha, ear canal etc.). This could instead be represented with a traditional diffuse field target, but I don’t think anyone actually wants their headphones to sound like that, so I’m omitting that one for now.
Here’s the Arya compared to the Harman over-ear 2018 target. So it has quite a bit less bass than the target asks for, along with a slight midrange dip. The lower treble has a bit more presence, but that’s basically it.
Here’s the Arya compared to the Harman over-ear 2013 target. I tend to find the bass on this one more appropriate, so it doesn’t deviate as strongly there. Upper mids are a bit closer on this one as well.
And here’s the Arya relative to a custom target that I’m calling ‘enthusiast neutral’. Basically this takes the Harman over-ear 2018 target but ignores the bass shelf (and other features below 900hz). The idea behind this was that while all the features of the Harman target above 900hz are still present, they loosely correspond to some ear-related gain factors (leaving aside the treble roll off for now). There may be some gain factors below 900hz from the head and neck as well but it’s likely not necessary to include them for headphones, and so this eliminates the preference-based features in lower frequencies like the 200hz dip and the bass shelf around 120hz. In a way this target is fairly close to the FR of a Focal Utopia. So on this comparison it has the slight midrange dip and it’s got a bit more energy around 5khz.