Effect Audio CODE 23 MK II / MK 2 Earphone Cables
CODE 23 MK II is the Horizon Series statement of Copper in its purest form. Built entirely from UP-OCC Pure Copper Litz, it preserves the conductor’s natural character without compromise—delivering weight, density, and a low-end foundation that is both powerful and solid.
The MK II evolution introduces three precise improvements: over 20% more conductive material for stronger signal delivery and dynamic headroom, a 10% reduction in overall diameter for improved ergonomics, and the Quad-FlexPro™ Solid Core system, which enhances frequency control and stability across the spectrum. Together, these refinements push performance further while retaining structural integrity.
CODE 23 MK II stands as the definitive expression of copper—focused, authoritative, and unmatched in its ability to project music with scale and presence.
Sound Profile:-
The result is EFFECT AUDIO's most powerful expression of copper in the Horizon Series, crafted for the purest Copper fans.
What is Improved in MK II:-
By increasing the strand count by 20%, CODE 23 MK II expands its conductive surface area , improving current uniformity and minimizing micro-resistance across the bundle. This refined geometry enhances transient accuracy and current delivery, translating engineering precision into audible control. Expect stronger yet tighter bass definition, cleaner high-frequency extension, and an effortless sense of dynamic coherence. The natural outcome of copper optimized to its physical limits.
2. 10% Reduction in Diameter
Despite the material increase, the cable is now slimmer thanks to the sleeve optimization. It keeps the same AWG size while improving overall flexibility and reducing bulk.
3. Quad-FlexPro™ Solid Core System
At the heart of CODE 23 MK II lies the third-generation Quad-FlexPro™ Solid Core System—an evolution of 2024’s Trio-Flex™ architecture and our pioneering 2023 Solid Core design. The central conductor now features four individually calibrated solid cores, each precisely tuned for its frequency role:
- One thick core for the lows, enabling superior current delivery and sub-bass authority
- One medium core for the mids, preserving tonal density and coherence.
- Two finer cores for the highs, refining transient speed and micro-detail retrieval.
This deliberately over-engineered solid-core architecture balances current flow and electromagnetic behavior, minimizing interference and mechanical stress across the frequency spectrum. Every structural choice is made to push copper to its physical limits, achieving greater harmonic stability, lower distortion, and exceptional phase alignment. This showcases copper’s natural warmth, revealed with unprecedented precision and control.
Quad-FlexPro™ embodies three years of solid-core evolution, representing Effect Audio’s relentless pursuit of perfection at its most precise, most powerful form.
Hardware Design:-
Its dual-layer construction, defined by clean lines, chamfered edges, and geometric precision, mirrors the discipline of aerospace design. This is not a design built on ornamentation, but one that achieves elegance through structure, symmetry, and purpose: a visual expression of the same EFFECT AUDIO engineering philosophy that drives the cable within.
Original: $551.65
-70%$551.65
$165.49
Description
CODE 23 MK II is the Horizon Series statement of Copper in its purest form. Built entirely from UP-OCC Pure Copper Litz, it preserves the conductor’s natural character without compromise—delivering weight, density, and a low-end foundation that is both powerful and solid.
The MK II evolution introduces three precise improvements: over 20% more conductive material for stronger signal delivery and dynamic headroom, a 10% reduction in overall diameter for improved ergonomics, and the Quad-FlexPro™ Solid Core system, which enhances frequency control and stability across the spectrum. Together, these refinements push performance further while retaining structural integrity.
CODE 23 MK II stands as the definitive expression of copper—focused, authoritative, and unmatched in its ability to project music with scale and presence.
Sound Profile:-
The result is EFFECT AUDIO's most powerful expression of copper in the Horizon Series, crafted for the purest Copper fans.
What is Improved in MK II:-
By increasing the strand count by 20%, CODE 23 MK II expands its conductive surface area , improving current uniformity and minimizing micro-resistance across the bundle. This refined geometry enhances transient accuracy and current delivery, translating engineering precision into audible control. Expect stronger yet tighter bass definition, cleaner high-frequency extension, and an effortless sense of dynamic coherence. The natural outcome of copper optimized to its physical limits.
2. 10% Reduction in Diameter
Despite the material increase, the cable is now slimmer thanks to the sleeve optimization. It keeps the same AWG size while improving overall flexibility and reducing bulk.
3. Quad-FlexPro™ Solid Core System
At the heart of CODE 23 MK II lies the third-generation Quad-FlexPro™ Solid Core System—an evolution of 2024’s Trio-Flex™ architecture and our pioneering 2023 Solid Core design. The central conductor now features four individually calibrated solid cores, each precisely tuned for its frequency role:
- One thick core for the lows, enabling superior current delivery and sub-bass authority
- One medium core for the mids, preserving tonal density and coherence.
- Two finer cores for the highs, refining transient speed and micro-detail retrieval.
This deliberately over-engineered solid-core architecture balances current flow and electromagnetic behavior, minimizing interference and mechanical stress across the frequency spectrum. Every structural choice is made to push copper to its physical limits, achieving greater harmonic stability, lower distortion, and exceptional phase alignment. This showcases copper’s natural warmth, revealed with unprecedented precision and control.
Quad-FlexPro™ embodies three years of solid-core evolution, representing Effect Audio’s relentless pursuit of perfection at its most precise, most powerful form.
Hardware Design:-
Its dual-layer construction, defined by clean lines, chamfered edges, and geometric precision, mirrors the discipline of aerospace design. This is not a design built on ornamentation, but one that achieves elegance through structure, symmetry, and purpose: a visual expression of the same EFFECT AUDIO engineering philosophy that drives the cable within.
