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The Nordost Heimdall 2 Digital 75 Ohm is a reference-grade coaxial digital audio cable designed to deliver flawless S/PDIF signal transmission, thanks to its true 75 Ohm impedance maintained throughout its entire length, including precision BNC connectors with included RCA adapters.
Handmade in Massachusetts, it features solid-core, silver-plated oxygen-free copper (OFC) conductors, Dual Mono-Filament technology, and precision-extruded FEP insulation, creating a virtual air dielectric that reduces absorption and preserves perfect geometry. Mechanically tuned lengths minimize microphony and high-frequency resonance, ensuring perfect timing and preventing data loss.
Its 97% silver-braided shielding protects against EMI and RFI interference, preserving signal purity and delivering distortion-free sound. Designed for the most demanding audiophiles, it offers ultra-high bandwidth, stable transmission, and dynamic response that reveals every nuance of a recording.
Cable type:
Reference-grade coaxial digital audio cable for S/PDIF transmission.
True 75 Ohm impedance design strictly adheres to digital transmission standards, avoiding timing errors or data loss.
Conductor:
1 × 20 AWG oxygen-free copper (OFC) with 99.99999% purity (7N).
Silver-plated to enhance conductivity and increase signal transmission speed, optimizing high-frequency performance.
Solid-core (non-stranded) to reduce skin-effect distortion and improve signal coherence.
Insulation (dielectric):
Fluorinated Ethylene Propylene (FEP) extruded directly over each conductor.
Uses Nordost’s patented Dual Mono-Filament technology to create a virtual air dielectric around the conductor.
This design minimizes physical contact between conductor and insulation, reducing dielectric absorption and maintaining perfect geometry.
Construction:
Mechanically tuned length and spacing to control internal resonance and microphony.
High-precision coaxial geometry to maintain constant impedance along the entire length.
97% coverage silver-braided shield for effective protection against electromagnetic (EMI) and radio-frequency (RFI) interference.
Connectors:
True 75 Ohm Neutrik BNC connectors, gold-plated for corrosion resistance and improved conductivity.
Includes true 75 Ohm BNC-to-RCA adapters for maximum compatibility without compromising performance.
Electrical parameters:
Capacitance: 15.0 pF/ft – extremely low to preserve signal speed and reduce loss.
Impedance: True 75 Ohm – essential for S/PDIF digital transmission without jitter or errors.
Propagation delay: 85% – close to the theoretical limit, ensuring the signal travels almost at the speed of light within the dielectric medium.
Outer jacket:
Protective braided red fabric sleeve for mechanical strength and a distinctive aesthetic finish.
