# The Objective, Subjective & Dejected Thread **URL:** \ **Category:** Miscellaneous\ **Created:** [April 23, 2019, 5:21pm UTC](https://forum.headphones.com/t/the-objective-subjective-dejected-thread/3018 "2019-04-23T17:21:24Z")\ **Posts on this page:** 1\ **Showing post:** 133
**Author:** ![NickZ](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.headphones.com/nickz/32/16394_2.png) [@NickZ](https://forum.headphones.com/u/NickZ)\ **Post date:** [October 25, 2020, 8:56pm UTC](https://forum.headphones.com/t/the-objective-subjective-dejected-thread/3018/133 "2020-10-25T20:56:00Z")
In this linked post the author says he did in-ear measurements for different people and the sound they heard varied pretty dramatically. He also says that ear/canal shape is individual to the point that it could be used for identification like a fingerprint. I have no way to validate this of course, but he does seem to be a science/fact type guy. > [@An audio engineer's quest for reference headphones... Pt. 1](https://forum.headphones.com/t/an-audio-engineers-quest-for-reference-headphones-pt-1/8152/25): > > Marketing is something everybody should be way more aware of. While HD600/650 may not be marketed as “studio” headphones, they are considered as one of the most neutral and “flat” headphones every produced. If you visit Ollo, you can see that they used the HD600 as a reference (no pun intended) for their S4X. I tried to find the answer to the question of how do I actually prove that this marketing “reference-grade” is true? And, the answer I found was: there is no way. All of our ears differ, … --- _[View the full topic](https://forum.headphones.com/t/the-objective-subjective-dejected-thread/3018)._