Well they operate both at 80 % of the speed of light , would love to see their equipment to measure that ,luckily they have faster cables
http://www.nordost.com/default/downloads/norse_2_brochure_lr.pdf
As far as i know the electro magnetic force operates at or just short of the speed of light ,about 99,99999 % of that
Heimdall Tonearm Cable
Insulation: Fluorinated Ethylene Propylene (FEP)
Construction: Precision Micro Mono-Filament
Conductors: 4 x 24 AWG
Material: 60 microns of extruded silver over
99.99999 % solid-core OFC
Capacitance: 25pF/ft
Inductance: 0.06?H/ft/
Propagation Delay: 80% speed of light
Termination: High quality 5pin Din, MoonGlo
RCA or Neutrik XLR connectors
Frey Tonearm Cable
Insulation: Fluorinated Ethylene Propylene (FEP)
Construction: Precision Micro Mono-Filament
Conductors: 5 x 24 AWG
Material: 60 microns of extruded silver over
99.99999 % solid-core OFC
Capacitance: 28pF/ft
Inductance: 0.055?H/ft/
Propagation Delay: 80% speed of light
Termination: High quality 5pin Din, MoonGlo
RCA or Neutrik XLR connectors