Precision Digital Signal Transfer in the Norse 2 Series | Available at Trimira Audio
The Nordost Heimdall 2 Digital Interconnect is a high-performance digital cable designed for demanding digital audio systems, combining controlled impedance, Micro Mono-Filament construction, silver-plated solid-core conductors, and comprehensive shielding.
Available in dedicated 75-ohm coaxial and 110-ohm balanced AES/EBU versions, the Heimdall 2 is designed to maintain the appropriate electrical architecture for the digital interface being used.
At Trimira Audio, we recommend the Heimdall 2 Digital Interconnect for high-performance connections between CD transports, network streamers, digital bridges, DACs, and digital processors.
Key Features & Technological Innovations
Proprietary Micro Mono-Filament Construction
Each conductor is spiral-wrapped with a fine FEP filament before the outer FEP jacket is applied.
This creates a low-contact dielectric environment designed to minimize dielectric interaction and energy storage while supporting rapid signal propagation.
Silver-Plated Solid-Core OFC Conductors
The Heimdall 2 uses high-purity 99.99999% OFC solid-core conductors with pure silver plating.
The solid-core architecture provides consistent conductor geometry without the strand interaction associated with conventional multi-stranded digital cables.
100% Dual-Layer Shielding
A combined foil-and-braid structure provides full coverage around the digital signal path, helping protect against:
- RF interference
- Electromagnetic interference
- External high-frequency electrical noise
- Digital crosstalk
Strict Characteristic Impedance
Two dedicated versions are available:
75 Ω Coaxial — intended for S/PDIF and other 75-ohm digital interfaces.
110 Ω AES/EBU — intended for balanced professional digital interfaces.
Maintaining the appropriate characteristic impedance helps minimize electrical reflections along the digital transmission path.
Precision Hand-Terminated Connectors
The 75-ohm version uses gold-plated BNC connectors, supplied with BNC-to-RCA adapters for compatible RCA S/PDIF equipment.
The 110-ohm version uses gold-plated 3-pin XLR connectors for balanced AES/EBU connections.
Technical Specifications
| Specification |
Heimdall 2 75-Ohm Coaxial |
Heimdall 2 110-Ohm AES/EBU |
| Series |
Norse 2 Series |
Norse 2 Series |
| Insulation |
Fluorinated Ethylene Propylene (FEP) |
Fluorinated Ethylene Propylene (FEP) |
| Construction |
Micro Mono-Filament, Coaxial |
Micro Mono-Filament, Twin-Axial |
| Conductors |
1 × 20 AWG Solid-Core |
2 × 20 AWG Solid-Core |
| Conductor Material |
99.99999% Solid-Core OFC with Silver Plating |
99.99999% Solid-Core OFC with Silver Plating |
| Capacitance |
15.0 pF/ft |
10.7 pF/ft |
| Impedance |
True 75 Ω |
True 110 Ω |
| Shielding |
100% Total Coverage Dual-Layer (Braid + Foil) |
100% Total Coverage Dual-Layer (Braid + Foil) |
| Velocity of Propagation |
89% Speed of Light |
88% Speed of Light |
| Terminations |
Gold-Plated BNC, Including BNC-to-RCA Adapters |
Gold-Plated 3-Pin XLR |
| Standard Lengths |
1.0 m, 1.5 m, 2.0 m, 3.0 m + Custom Lengths |
1.0 m, 1.5 m, 2.0 m, 3.0 m + Custom Lengths |
75 Ω vs 110 Ω: Choosing the Correct Version
The two Heimdall 2 Digital Interconnect versions are designed for different digital interfaces:
| Connection |
Recommended Heimdall 2 |
| S/PDIF Coaxial |
75 Ω Coaxial |
| AES/EBU Balanced |
110 Ω AES/EBU |
The correct version should be selected according to the digital input and output specifications of the connected components.
Consult with the Digital Audio Specialists at Trimira Audio
The Nordost Heimdall 2 Digital Interconnect is designed for demanding digital source-to-DAC connections where correct impedance and carefully controlled cable construction are important.
Trimira Audio can assist with:
- Confirming 75 Ω versus 110 Ω requirements
- BNC versus RCA connectivity
- AES/EBU XLR configuration
- Cable length selection
- CD transport-to-DAC matching
- Streamer-to-DAC configuration
- Private digital-system auditions
For a high-performance digital signal path, Heimdall 2 combines Micro Mono-Filament construction, silver-plated solid-core OFC, 100% shielding, controlled impedance, and precision termination in dedicated 75-ohm and 110-ohm Norse 2 Series configurations.
