Yes, the 3db bass boost is the listeners' preferred curve.  The bass boost is iffy for me, because some headphones just have natural, extending, and potent bass.  Others don't.  So some need the boost, some don't.  The HD800 has natural, potent, and well extending bass.  The only EQ it needs in the bass region is to compensate for rolloff, but it definitely doesn't need a boost throughout the entire region.  It already has a little hump in the mid-bass to begin with.  Other headphones with measurably flat bass like the older LCD2 and now the LCD-X, don't need it either.  Some headphones, like the Focal Spirit Professional have that 3db hump, and it sounds nice and balanced.


Bob Katz is all 4 of those pictures, yes.

Sonarworks made HD 25s semi listenable but didn't really improve the current HD 600 and HD 650 enough. Maybe if I were mixing on the HD 650 but I wouldn't mix on the HD 650 on the go as then I would need to carry around an amp powerful enough to use their DSP with the HD 650.

How equivalent is Tyll's measurement system to Sean Olive's measurement system? This might be crucial. For example, maybe Tyll gets a better seal than Olive.

He uses a Kemar from B&K. Theoretically it should be quite close.

Please folks remember that the current Harman curve is their first pass guestimate and existed to include in blind testing vs. other compensation curve to see if it was preferred----which it was.   It does not represent a finished proposed standardization curve to be added to any of the international standards. So, it should be strongly considered a work in progress still.

Speaking of VSTs, is there a way to apply VSTs system-wide? 

on windows, I integrate VSTs with HifiCable and VSTHost.

http://vbaudio.jcedeveloppement.com/Download_CABLE/HiFiCableAsioBridgeSetup_v1007.zip

http://www.hermannseib.com/english/vsthost.htm