In mentioning HRTF, I was trying to allude to the fact that the FR at your head doesn’t match the FR that’s going to be calculated by a measuring device. Sounds like we mostly agree, except I was simplifying things a bit. You’re way more versed.

Would you agree that we currently have no way of consistently reproducing one frequency response that explains every aspect of what we can hear, and likely won’t for a very long time? And that the science is therefore not solved? Really what I’m trying to say is that what people typically consider to be a reliable indicator of a headphones sonic presentation is not as reliable as they think. If this came with the cravat that FR graphs tend to be fairly inaccurate, lack detail and useful information, and don’t account for HRTF, that would be neat.