Fearless Audio S8 Freedom vs. S8 Pro:
They are very close, with the Pro having boosted bass (could be caused by seal difference, but I trust HBB, so it's probably not that), which to me doesn't make sense, because it was supposed to be more neutral/reference. They are both V-shaped, with the Pro having slightly more polite treble (in the problematic 6-8kHz region). I am working on compensations for the Harman target, but I have to "fix" a few things, that have to do with the graphs (linear vs. logarithmic), which is trowing a wrench in my wheel currently, so give me a few more days to take care of that, after which I will make "compensated" versions of the graphs.