Code 24 MK II
CODE 24 MK II is Effect Audio's definitive love letter to SPC enthusiasts, it delivers speed and transparency with clarity, while copper’s foundation preserves body and weight. The result is a sound that is fast, open, and powerful—free from harshness yet uncompromising in detail.
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 24 MK II surpasses the balance of its predecessors, defining itself with clarity, precision, and expansive scale—an SPC cable at its most accomplished.
Sound Profile
The CODE 24 MK II brings meaningful upgrades in technical sonic precision, building upon the renowned accuracy of its predecessor. Maintaining 16.5 AWG gauge in a 2-wire configuration, it embodies structural boldness rarely seen in Silver-Plated Copper cables—pushing resolution and dynamic handling to new heights.
This next-generation performance is driven by EA's optimized Quad-FlexPro™ Solid Core System and Multi-sized Core Bundles with a Proprietary Multi-size Strands Blend of Premium UP-OCC Silver-Plated Copper Litz. The result is a sound signature defined by speed, finesse, and surgical control. Transients are razor-sharp, revealing the most delicate microdetails with immediacy and intent. The stereo sound field expands in both width and depth, while ultra-high frequencies extend with super-tweeter–like clarity, shimmering detail, and zero harshness. CODE 24 MKII is especially well-suited for IEMs with thicker or meatier tonal signatures, unlocking their resolution with precision across the entire frequency range.
The CODE 24 MK II is their definitive love letter to SPC enthusiasts, pushing the material's inherent strengths: its speed, control, and crystalline detail to their absolute maximum, making it the most transient cable in the Horizon Series.
What is Improved in MK II?
CODE 24 MK II advances on every level. With a greater volume of conductive material, it delivers stronger signal flow that translates into faster transients and more precise detail retrieval. Despite this increase, careful sleeve optimization gives the cable a slimmer, more ergonomic profile, improving flexibility and reducing bulk while maintaining the same core gauge.
At its heart lies the Quad-FlexPro Solid Core System, an evolution of our earlier Trio-Flex™ design. The central conductor is divided into four individually calibrated strands across three distinct sizes, each tuned to refine the lows, mids, and highs. This structure enhances compliance and stability, resulting in a cable that achieves both frequency accuracy and balanced musicality, while uniting solid-core performance with everyday comfort.
Hardware Design
The Y-split of the CODE 24 MK II embodies a forward-looking vision of engineering. Machined from lightweight aluminum and finished in a soft metallic gold, its compact, modular form draws inspiration from propulsion systems and precision aerospace components.
Its dual-layer construction is defined by clean lines, chamfered edges, and tight geometric balance. This is not a design built on ornamentation, but one that achieves elegance through structure, symmetry, and purpose.
In the Box:
- Headphone cable
- Manual
