I can only wonder what 'stats they have in mind when they say it has an electrostatic-like sound...
I found the HE-400 and SR-202/SRM-212 combo to sound quite similar, down to the faults like graininess and recessed mids/vocals. The vintage SR-Lambda walked all over both for me because of that, and if they can make something even approximating that glorious midrange and sparkly-but-not-ear-piercing treble in the HE-400i...
They'll also need bigger earcups, too. The HE-400's were a tad too small to be circumaural to my ears. DT**0 or Lambda-size cups would be large enough.