I didn't see a single thread with all of the measurements like the DAC measurement image with all of the data.
That's because, even more so than amps or DACs, individual headphones can't really be ranked with a simple, dumb metric as the on-head response of the sample you own may more or less differ from how they measured on a test rig for various reasons.
For example, the K371 scores pretty well without EQ, but that score is utterly meaningless if you struggle to get a good seal with it (which is not an uncommon problem with that design).
That score originated from Harman's research on FR targets, but while it was used as a statistical exercise in the published paper it's unfortunately been excessively used to judge individual headphones, which IMO isn't a particularly good idea.
Any sense of whether that 74 score is surpassed by other headphones with or without EQ?
Since you're ready to EQ, the score is even less important than how EQable a pair of headphones is, which is not the same thing. IMO important factors are :
- few high-Q peaks or nulls, particularly of the uncorrectable kind (highly asymmetrical shape, etc.)
- since that's often the part of the spectrum that's the most inaccurately measured, which differs the most between individuals, and that is the hardest to EQ, trebles that you already find quite enjoyable.
- good channel matching, including good on-head channel matching (your head is not symmetrical)
- low enough non-linear distortion (doesn't have to be the best)
- the design ensures that most people will experience the level of seal it was designed for
- stable on-head FR with low positional variation
- stable FR over time : the pads don't deteriorate too quickly, or don't change the FR too much during use (foam warming up)
- long term availability of pads / parts : you're likely to fine-tune the profile over time and will have to do it all again if you can't find replacement pads for it
- low sample variation (particularly if you're going to use profiles from measurements done with other samples on an ear simulator).
The HD800S you already own check quite a few of these points unless I'm mistaken. I'd spend more time fiddling with EQing it for now unless there are other reasons you'd be yearning for something else (you don't like the comfort, you realise you want a closed back, etc.) or you eventually find out that they don't work for you as a platform for EQing.
