Atlas Zeno Harmonic SC Grun Cable Delivers Reference-Class Fidelity
Atlas Zeno Harmonic SC Grun is a reference-class OCC copper balanced headphone cable designed specifically for critical headphone listening, where fidelity, grounding integrity and sonic neutrality are paramount. This cable is a no-compromise solution for discerning audiophiles seeking to extract the absolute performance ceiling from premium open-back or closed-back headphones.
Zeno Harmonic SC Grun Uses OCC Copper Conductors to Maximise Signal Purity
Zeno Harmonic SC Grun is a true dual-balanced headphone cable built with solid-core OCC (Ohno Continuous Cast) copper. This extremely pure copper is selected for its superior signal conductivity and minimal internal grain boundaries, ensuring uncoloured and stable audio transmission across the entire audible spectrum.
Unlike conventional stranded cables, the use of solid-core conductors in the Zeno Harmonic model directly reduces microphonic distortion and vibration-induced signal smear. By eliminating these transient inaccuracies, the cable maintains greater temporal precision and timing coherence—an especially vital trait when reproducing high-resolution formats or nuanced analogue recordings through revealing planar-magnetic or dynamic driver headphones.
Grun Earthing System Provides Grounding Stability and Ultra-Low Noise Floor
Zeno Harmonic SC Grun features Atlas' proprietary Grun Coherent Earthing System, a technology aimed at addressing grounding inconsistencies that often introduce intermodulation noise and elevate the noise floor in headphone systems. Through this solution, the cable maintains a consistent and stable reference ground across its length, enabling a truly balanced signal path free from contaminating interference.
For users connecting to grounded headphone amplifiers, the system also includes a 1m Grun cable with spade tag adapter, optimising EMI/RFI rejection and providing a blacker background with enhanced microdynamic clarity. An optional Grun mains adapter is available for systems that require even deeper noise floor suppression and grounding integration.
Physical FPE Dielectric Enhances Dielectric Efficiency and Tonal Accuracy
Zeno Harmonic SC Grun employs an advanced wideband dielectric known as Physical FPE (foamed polyethylene), carefully selected for its low dielectric constant and fast energy release characteristics. This dielectric improves the cable's transient response, tonal neutrality and phase linearity, resulting in a presentation that feels both dynamically spacious and organically grounded.
The wideband dielectric ensures that the signal maintains speed and harmonic integrity, preventing the artificial thickening or rounding off of frequency extremes that can sometimes colour the listening experience in lesser cable designs.
Solder-Free Cold-Weld Construction Ensures a Continuous High-Integrity Signal Path
Atlas Zeno Harmonic SC Grun is assembled using a cold-weld termination process that creates a solder-free, airtight, metal-to-metal bond between conductor and connector. This method removes potential signal discontinuities caused by solder joints, enhancing material purity and long-term durability.
Every connection point utilises precision-crimped OCC copper contacts housed in low-mass, wide-bandwidth connectors, including your choice of 4-pin XLR or 4.4mm TRRS termination. These connectors have been purpose-designed to maintain mechanical stability while supporting full balanced operation for headphones requiring fully symmetrical signal delivery.
Atlas Hand-Assembles Every Zeno Harmonic Cable in Scotland for Custom Fidelity
Atlas assembles each Zeno Harmonic SC Grun cable by hand in Scotland, ensuring unmatched build consistency and allowing for customisation to user specifications. Standard lengths range from 0.5m to 4m in 0.5m increments, and bespoke configurations can be ordered on request to match the unique cabling requirements of flagship headphone systems.
The cable is wrapped in a black fabric jacket with luxe finish options, giving it a refined appearance to match its audiophile-grade performance. With a diameter of 8.6 mm, it remains flexible yet robust, capable of daily use in desktop, studio, or dedicated headphone rig setups.
Zeno Harmonic SC Grun Supports the Full Dynamic Potential of Flagship Headphones
Zeno Harmonic SC Grun is engineered for the world’s most resolving headphones—models from Focal, Audeze, HIFIMAN, Meze, Sennheiser, and others. Its low inductance of 0.798 µH/m and low capacitance of 40.05 pF/m ensure maximum signal integrity, especially over extended lengths. Whether connected to a discrete headphone amplifier or an integrated DAC/headamp unit, this cable maintains sonic consistency from source to driver.
With its 0.971 Ohms/m resistance and robust shielding via an OFC braid, the cable delivers a high signal-to-noise ratio, making it ideally suited for revealing transducers where low-level detail retrieval and dynamic nuance are essential.
Atlas Zeno Harmonic SC Grun Elevates Headphone Listening to Studio-Level Resolution
Zeno Harmonic SC Grun balanced cable redefines the audio performance limits of high-end headphones by removing bottlenecks caused by inferior stock cabling. With its reference-grade OCC copper architecture, coherent grounding, and mechanically-stable solderless terminations, it gives music a more lifelike presence—allowing deeper emotional and analytical engagement with every track.
