'one of the headphones of all time'
pic poached from the other place
some deets from the manufacturer's website:
MOTOR Specifications
Configuration
Complimentary Tuned Triple Ribbon
Ribbon Type
Corrugated Pure Aluminum (True-Ribbon) with Viscodamp™ “Silent Metal” Viscosity Dampening
Surface Area
25.2 cm² (3.9 in²)
Excursion
+/- 4mm (0.157 in)
Maximum SPL
118dB
Impedance
0.057Ω
Impedance with Specialized HP Cable
0.29Ω
aaand it requires a proprietary converter and cable for use with amplifiers, weighs in at a hefty 626g, costs an eye watering $9,757usd for the 'full package' and $ 7,589 for the headphone alone