True 75-Ohm Precision for Digital Transmission | Available at Trimira Audio
The Nordost Blue Heaven Digital Interconnect is a high-performance coaxial digital cable designed around the 75-ohm characteristic impedance required by S/PDIF digital audio.
Its construction combines Nordost's Micro Mono-Filament technology, silver-plated solid-core OFC conductors, carefully controlled coaxial geometry, and extensive shielding. The result is a purpose-built digital interconnect for connecting CD transports, network streamers, DACs, digital processors, and other S/PDIF-equipped components.
At Trimira Audio, we recommend the Blue Heaven Digital Interconnect for listeners looking to replace generic digital cables with a purpose-engineered 75-ohm coaxial connection.
Key Features & Technological Innovations
True 75-Ohm Coaxial Architecture
The cable is designed around a controlled 75-ohm characteristic impedance, helping maintain consistent electrical conditions along the digital signal path.
This is particularly important for S/PDIF applications where impedance discontinuities can produce signal reflections.
Proprietary Micro Mono-Filament Construction
The central conductor is wrapped with a FEP filament before the outer FEP jacket is applied, creating a low-contact dielectric structure designed to minimize dielectric interaction and energy storage.
Silver-Plated Solid-Core OFC Conductor
The cable uses a 24 AWG solid-core conductor manufactured from high-purity OFC copper with silver plating.
The solid-core architecture provides consistent conductor geometry for high-frequency digital transmission.
High-Coverage Braided Shielding
A 95% braided shield helps protect the digital signal from external RF and electromagnetic interference.
Gold-Plated BNC Termination with RCA Adaptation
The standard cable uses true 75-ohm BNC termination, with gold-plated BNC-to-RCA adapters supplied for compatibility with conventional RCA S/PDIF inputs and outputs.
This approach allows the cable to maintain its intended coaxial architecture while accommodating components equipped with RCA digital sockets.
Technical Specifications
| Specification |
Blue Heaven Digital Interconnect |
| Series |
Leif Series (Digital Data) |
| Insulation |
Fluorinated Ethylene Propylene (FEP) |
| Construction |
Mechanically Tuned Spacing, Micro Mono-Filament, Coaxial Design |
| Conductors |
1 × 24 AWG Solid-Core |
| Conductor Material |
99.9999% Solid-Core Oxygen-Free Copper (OFC) with Silver Plating |
| Capacitance |
14.0 pF/ft |
| Characteristic Impedance |
True 75 Ω |
| Shield Coverage |
95% Braided Shield |
| Velocity of Propagation |
85% Speed of Light |
| Standard Terminations |
Gold-Plated True 75-Ohm BNC, Including BNC-to-RCA Adapters |
| Standard Lengths |
1.0 m, 1.5 m, 2.0 m, 2.5 m, 3.0 m, 3.5 m, 4.0 m + Custom Lengths |
Consult with the Digital Audio Experts at Trimira Audio
The Nordost Blue Heaven Digital Interconnect is suited to S/PDIF connections between:
- CD transports
- Network streamers
- DACs
- Digital preamplifiers
- AV processors
- Other 75-ohm digital components
Trimira Audio can assist with:
- Confirming RCA or BNC compatibility
- Selecting the appropriate cable length
- Digital source-to-DAC system matching
- Planning a complete digital cable upgrade
- Arranging a system audition
For a purpose-built S/PDIF connection, Blue Heaven combines 75-ohm coaxial geometry, silver-plated solid-core OFC, Micro Mono-Filament construction, 95% shielding, and BNC/RCA compatibility in a carefully engineered digital interconnect.
