Shure needs to curve the headbands more. On maximum extension, the SRH840 cannot cover both my earlobes at the same time because the headband is too flat.
It's interesting. Mid-to-high tier headphones don't seem to have much headband extension. I use my HD215 (cheap closed phones) at some 40% extension and wonder who the heck is going to use that full extension. Germans? Giant Germans?
maybe they're preparing for evolution...they must figure, one day, people's craniums will suddenly become twice as big