Audioquest Big Sur Jack/Jack 2m

The AudioQuest Big Sur Jack/Jack 3.5 mm cable is an analog cable. It is the first model in the range to feature PSC+ (Perfect Surface Copper+) technology. This interconnect cable incorporates technical innovations usually reserved for high-end models. Designed for critical audio connections between high-fidelity equipment, it is aimed at audiophiles seeking optimal signal transmission over short distances.

Conductor Technologies

The technological core of the Big Sur lies in its solid PSC+ copper conductors, an evolution of traditional copper that minimizes distortions caused by crystalline grain boundaries. This perfect surface technology reduces unwanted electrical and magnetic interactions between conductor strands, a common issue with conventional multi-strand cables.

The double-balanced asymmetric geometry is an ingenious approach for single-ended applications. Unlike conventional designs that use a single path for both ground and shielding, this architecture separates these two functions to achieve a relatively lower impedance on the ground side. This configuration promotes increased dynamics and superior harmonic richness, which is especially appreciated with modern digital sources.

Active Noise Dissipation System

The major innovation lies in the metal-layer noise dissipation system, which goes beyond traditional shielding. While conventional systems absorb and then drain RF energy to the component’s ground—thus modulating the critical reference plane—AudioQuest’s technology “protects the shield” by absorbing and reflecting most of this unwanted energy before it reaches the layer connected to ground.

This preventive rather than corrective approach maintains the integrity of the reference signal, a fundamental element for faithful reproduction. The result is a noticeable reduction in background noise and better definition of micro-details, particularly perceptible during complex musical passages.

Optimized Insulation and Dielectric

The nitrogen-injected, foamed polyethylene insulation addresses a fundamental physical issue: any solid material adjacent to a conductor is part of an imperfect circuit. Insulation materials and printed circuits absorb energy, store it, and then release it as distortion.

Foamed polyethylene, with its high air content, minimizes this defocusing effect. Since air absorbs virtually no energy and polyethylene has a benign distortion profile, this combination preserves the natural dynamics and subtle contrasts of the original recording.

Technical Specifications

Materials and Construction

• Conductors: Solid PSC+ (Perfect-Surface Copper+) copper
• Dielectric: Nitrogen-injected expanded polyethylene
• Geometry: Double asymmetric symmetry
• Shielding: Multilayer with active noise dissipation using metal foils
• Sheath: Black and brown braid

Finishes and Treatments

• Connector finish: Gold plating
• Terminations: Pure purple copper with gold plating
• Assembly: Cold-welded (no traditional soldering)

Advanced Features

• Direction-controlled conductors
• Active noise dissipation system
• Nitrogen-injected insulation for optimal performance

Connectors and Dimensions

• Connector type: 3.5 mm mini-jack (M) to 3.5 mm mini-jack (M)
• Length: 2 m