Delivery time approx. 1-2 weeks

CODE 23 MK II

CODE 23 MK II is available in both IEM and headphone configurations.

The headphone variants support individual lengths of 1.5 m or 1.8 m, with a selection of connection options available upon request.

For custom orders, please contact us: info@audioessence.ch or call: (+41) 77 403 35 26

CODE 23 MK II is equipped with ConX® & TermX™ Basic Set supplied.

ConX® Basic Set:

• 2-pin (0.78 mm)
• MMCX

TermX™ Basic Set:

• 2.5 mm
• 3.5 mm
• 4.4 mm

CODE 23 MK II is the Horizon series' statement for copper in its purest form. Constructed entirely of UP-OCC pure copper litz, it preserves the conductor's natural character without compromise—with weight, density, and a powerful and solid base in the lower frequency range.

The MK II evolution brings three precise improvements: over 20% more conductive material for stronger signal transfer and dynamic headroom, a 10% reduction in overall diameter for improved ergonomics, and the Quad-FlexPro™ Solid Core system, which improves frequency control and stability across the entire spectrum. Together, these refinements further enhance performance while maintaining structural integrity.

CODE 23 MK II is the definitive expression of copper – focused, authoritative, and unsurpassed in its ability to reproduce music with grandeur and presence.

Sound profile

CODE 23 MK II marks a significant advancement in solid-core geometry—retaining its hefty 16.5 AWG gauge and introducing our proprietary Quad-FlexPro™ solid core system. While retaining the core configuration of its predecessor, the internal 13-conductor multi-sized bundle has been further developed for maximum resolution, consistency, and dynamic energy.

By combining copper strands of different diameters, the CODE 23 MKII now offers better transient control and current stability, resulting in a low end with a subwoofer-like effect. The bass is deep, physical, and impressive, with a sense of scale that conveys the full weight of the performance. The midrange remains grounded and expressive, while vocals convey warmth and presence without sacrificing clarity.

It's the most powerful expression of copper in the Horizon series—designed for listeners who want to be captivated by weight, body, and dynamic power. The CODE 23 MK II embodies a forward-thinking, robust, and immersive listening experience—setting new standards for copper cabling through structural innovations and continuing our commitment to unlocking the full potential of a single material.

What has been improved in the Code 23 MK II?

The CODE 23 MK II pushes the boundaries of pure copper performance with remarkable improvements in both sound and design. The use of a larger amount of conductive material enhances signal transmission for deeper bass, richer sonic richness, and better articulation. Despite this improvement, the cable has been refined by optimizing the jacket to achieve a slimmer, more flexible shape that takes up less space while maintaining the original cross-section.

At its heart is the Quad-FlexPro™ Solid Core System, an evolution of the previous Trio-Flex™ architecture. The central conductor is divided into four individually calibrated strands in three different sizes, each tuned to refine the lows, mids, and highs. This design improves structural compatibility while maintaining electrical stability, delivering a powerful and balanced sound—with the precision of solid-core engineering and the convenience of everyday use.

Hardware design

The CODE 23 MK II's Y-splitter embodies a forward-looking vision of engineering. Crafted from lightweight aluminum and finished with a soft metallic gold finish, its compact, modular form is inspired by propulsion systems and precision components used in aerospace.

Its two-layer construction is characterized by clean lines, beveled edges, and a rigorous geometric balance. This design is not based on ornamentation, but achieves elegance through structure, symmetry, and practicality.

Scope of delivery

• EFFECT AUDIO CODE 23 MK II cable
• ConX® &TermX™ Basic Set