Cardas Parsec headphone cable 1m

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Overview

The Cardas Parsec is an evolution of the first headphone cable launched by Cardas in 2003. This modernized version features more finely stranded conductors and uses optimized dielectric materials. It retains the acoustic principles that characterize the designs of the Oregon-based brand.

Star-Quad Architecture and Natural Mathematical Proportions

The Parsec uses a four-conductor star configuration (Star-Quad) combined with the application of the golden ratio (1.6180339887…), a mathematical proportion found throughout nature and architecture since Ancient Egypt. In the context of audio cables, this proportion governs the progressive sizing of the conductor strands: each layer of strands increases in diameter by a factor of 1.618 compared to the previous one, with the finest strands at the center.

This approach, patented by George Cardas in the 1980s, aims to eliminate parasitic resonances between the conductor strands. Each strand vibrates at its own frequency without sharing a common harmonic node with its neighbors, thereby mutually canceling out the interferences they generate. The result is a purer transmission of the audio signal, free from the colorations induced by the cable’s own mechanical resonances.

Materials and Construction: The Quest for Absolute Purity

The four conductors of the Parsec use Grade 1 oxygen-free copper, boasting a purity of 99.9999%. This copper undergoes a proprietary drawing and annealing process, then receives an SPN (Single Poly-Nylon) coating that prevents oxidation while eliminating crosstalk between strands—a technique inspired by Litz wire used in radio frequency applications.

The insulation uses PFA (perfluoroalkoxy), a high-performance fluoropolymer chosen for its excellent dielectric properties. The conductors are assembled using a carbon-impregnated polytetrafluoroethylene (FEP) tape, creating an antistatic barrier while maintaining the cable’s precise geometry. The outer sheath, made of Alcryn elastomer, ensures remarkable flexibility—a crucial detail for a cable designed to follow the listener’s movements without creating mechanical noise or snagging on clothing.

From Family Prototype to Parsec Standard

The Parsec builds on the proven architecture of the original cable while benefiting from two decades of technological evolution. The conductors now feature finer stranding, allowing for better flexibility and reduced internal mechanical stress. The shielding has been optimized to provide increased protection against electromagnetic interference, which is especially important in today’s environment saturated with wireless signals.

The cross-field geometry applied to the conductor layers minimizes electromagnetic interactions between the strands, thus reducing distortion and preserving the integrity of the musical signal. This approach fundamentally differs from conventional cables, where parallel conductors create unwanted capacitive and inductive couplings.

Compatibility and Practical Use

This specific model is configured with connectors for Sennheiser HD600, HD650, and HD660 headphones on one end, and a 4.4 mm jack on the other—a setup suited to modern portable and desktop amplifiers equipped with balanced outputs. The one-meter length offers an optimal compromise between freedom of movement and minimizing cable length that could induce losses or interference.

The outer diameter of 5.21 mm remains reasonable for a cable of this technical sophistication. The flexibility of the Alcryn sheath, combined with the star construction, allows the cable to coil easily without retaining shape memory, making storage and transport convenient.

Technical Specifications

Conductors

4 × 23.5 AWG
Grade 1 oxygen-free copper, 99.9999% high purity
SPN coating (Litz wire)
Sections calculated according to the golden ratio

Construction

Four-conductor shielded star-quad configuration
Assembly with carbon-impregnated polytetrafluoroethylene (FEP) tape
Cross-field geometry for interference reduction
High-performance perfluoroalkoxy (PFA) insulation

Connectors and Dimensions

Connectors: Sennheiser HD600 / 650 / 660 headphone plug to 4.4 mm jack
Outer diameter: 5.21 mm
Length: 1 m

Materials

Ultra-flexible Alcryn elastomer outer sheath
Carbon-impregnated FEP tape
High-performance PFA insulation

Advantages

High-fidelity audio transmission
Excellent flexibility for portable use
Protection against interference and noise thanks to cross-field geometry
Premium Cardas build quality

Frequently Asked Questions

Does the cable require a break-in period?

Like all Cardas cables, the Parsec benefits from a stabilization period of about 100 hours of use. During this phase, the dielectric materials gradually polarize, optimizing their transmission properties. The changes are subtle but noticeable, particularly in terms of fluidity and tonal coherence.

Is the 4.4 mm jack compatible with standard 3.5 mm sockets?

No, the 4.4 mm Pentaconn jack is a distinct standard used for balanced connections. Adapters exist but may compromise the benefits of the balanced configuration. For use with 3.5 mm or 6.35 mm unbalanced sockets, Cardas offers other terminations upon request.

Does the golden ratio really have an audible impact?

The golden ratio proportions help avoid common harmonic resonances between the different conductor strands. Each strand vibrates at its own frequency without reinforcing the vibrations of its neighbors. This mathematical approach results in a measurable reduction in background noise and distortion, especially in the midrange where the human ear is most sensitive.

Why use copper instead of silver for the conductors?

High-purity copper offers a more natural tonal balance than silver, with a slightly warmer sound signature in the midrange. Silver, while slightly more conductive, tends to accentuate high frequencies. Cardas’s choice of Grade 1 copper prioritizes musicality and the absence of listening fatigue during long sessions.

Is the cable directional?

Although the Parsec does not feature directional markings, the internal structure has a slight asymmetry due to the manufacturing process. Some users report subtle differences depending on the connection direction. Cardas recommends trying both orientations and keeping the one that sounds best in your system.