That EQ that I run (graph in my previous post), it's a bit complicated to explain, but I'll explain the process of how I created the EQ. I have 3 units of Old Version and a miniDSP EARS headphone measuring rig. I measured all 3 units of Old Version on my miniDSP EARS - each unit measured almost identical, I then took an average of those 3 frequency responses. I then used REW to create a conversion curve from miniDSP EARS to GRAS (Amirs/Oratory's measuring rig) by comparing my miniDSP EARS average measurement of those 3 units to Oratory's published measurement of HD560s, which was based all on Old Version of HD560s at that time - so basically my main assumption here was that the average of my 3 units was the same (or similar) to the average of units that Oratory measured on his GRAS, which is a bit of a jump but it's a low unit to unit variation headphone based on my measurements (I've also measured 2 units of New Version & they were low unit to unit variation too). Ok, so now I've created a conversion curve from miniDSP EARS to GRAS that is only applicable to a HD560s model, because conversion curves would be different for different models of headphone, but it is a valid thing to do to create a conversion curve for a specific model of headphone. So now I've got this conversion curve from miniDSP EARS to GRAS, I then measured 2 units of New Version HD560s. (One of those units I sent back for bad channel balance, and I kept the good one.). I then applied the miniDSP EARS to GRAS conversion curve that I'd created to the measurement of the New Version HD560s to turn it into a "GRAS style" measurement and then EQ'd that to the Harman Curve - which is the graph you see in my previous post and I'll include it again as a thumbnail here:
View attachment 340253
So essentially that's as if Oratory had measured my New Version HD560s, but based on the assumption that my 3 units of Old Version measured closely on average to spread of units of Old Version that Oratory measured. Because I saw very little unit to unit variation within the 3 Old Version units I measured, and also the same within the 2 units of New Version I measured, then I'm quite confident that it would be a good comparison & good conversion curve, but it is an assumption, so that's where the potential inaccuracies can be found, so as they say "pinch of salt"! I then apply those 3 High Shelf Filters that are in the bullet points in my previous post, which is a Linear Tilt EQ, which I'll talk about in following paragraph.
So, what do I mean by Linear Tilt EQ (or linear tone control)? Basically, if you imagine a seesaw that's balanced in the middle and it can tilt up or down or level depending on where the two people are at any given time, so a seesaw, imagine that. Well, a linear tilt EQ (linear tone control) is basically just applying an EQ function to the frequency response that is described as a straight line throughout the whole frequency response, and you can either decide to have it tilted upwards to create a brighter headphone (increasing treble & decreasing bass) or you can have it tilted downwards (decreasing treble & increasing bass). It's just a very broad and gentle way (in terms of not changing the defining fine-grained frequency response characteristics of the headphones) to tune the general tonality of the headphone. The idea being that you use specific fine-tuned parametric EQ to remove & fix the main anomalies of the headphone (eg see my graph in the thumbnail above), and then on top of that you apply the broad tone control (linear tilt EQ) to suit the tonality to your liking. That's one approach to do it, an approach I devised off my own back. You can also get similar results by using an Oratory EQ and tuning his user customisation filters, which is a more targeted approach.
So you asked me what tonality I run on my HD560s headphones. Well the answer to that is around +1dB more bass than an Oratory measurement (albeit this was based off his earlier measurements & EQ's but it's not changed a great deal), and I also run a slight decrease (1dB or less decrease IIRC) on the shouty region which is around 1300hz to 3000hz IIRC. His 7000Hz filter I increased by around 1dB or so. I also don't use his -1dB High Shelf that sits at 10000Hz, so I run it with a touch more treble above 10kHz. So that was all created based on me tuning his user customisation filters whilst listening to music. However, the other approach I use is to apply that linear tone control I was talking about, which I run at -1.25dB total slope over 20Hz-20000Hz, which is -0.42dB for each of the 3 High Shelf Filters of that Linear Tone Control EQ. Best most simplest answer is that I run it just a tad more V-shaped than Oratory's EQ.
Sorry for long post, some very difficult concepts to explain, I hope it's mostly understandable but I wouldn't feel bad if you don't know what I'm talking about, it's complicated!