Sean,
did any of them notice the imbalance between left and right channel for headphone HP1 between 3khz to 4khz?
Just asking as Keith Howard does the measurement and most reviews of the headphones at Hifi News (using a head-ear with measurement dummy), and is always interesting just how much imbalance between channels can exist at specific frequencies, for some that are liked this can be as much as -10db (albeit over a small range of the frequency).
Another point and maybe worth researching; how many who auditioned the headphones actually positioned them correctly for both ears, because even a slight difference creates a large measurement difference from what I understand, and this is further compounded by the fact most do not put headphones back on in the exact same position.
So do those auditioning have a preference change when the headphones are positioned differently or are other factors also contributing to headphone quality perception?
Cheers
Orb