全球唯一帶屏蔽三芯中空線結構，用聲音讓人徹底著迷
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延續單芯入戶空心線（HU-165 MKIII、HU-220 MKIII）在高端電源系統中的成功經驗，Monitor Acoustics 將中空導體技術全面升級，進一步推進至高承載、低阻抗的室內三芯電源專線領域，推出全新 SSS-50 MKII。
SSS-50 MKII 專為大型音響系統、旗艦級擴大機、專業電源配線與高電流應用所設計，從導體源頭即嚴選 6N LC-OFC 高精純銅（超低含氧 2.8ppm），於製線過程中經歷多重退火與精煉處理，徹底釋放金屬內部應力，使導體達到極高純度與長期穩定性，為大電流、低失真的能量傳輸奠定最關鍵的基礎。
中空導體 × NASA 級工藝 × 更高能量密度
SSS-50 MKII 採用 10 蕊銅導線絞繞成一股，三相電（水／火／地）各以六股 S 絞繞成一線，並於導體中心形成高度穩定的中空介電結構。此結構源自美國 NASA 航電導體設計邏輯，充分利用集膚效應（Skin Effect）的物理特性，使電流集中於導體外層高速傳輸，中空結構則同步增加有效傳導面積，並形成自然的氣體流通通道，達到快速導電、穩定散熱與低能量壓縮的效果。
10 蕊 × 六股的對稱式幾何絞繞設計，可有效抵銷導體間磁場互擾，大幅降低外部 EMI / RFI 的影響，同時抑制線材本體的機械共振，使背景更安靜、音場更深、結像更穩定。中空氣層亦構成天然的低介電常數結構，顯著降低電容效應，使高頻延展更自然、能量傳導更線性，讓聲音在龐大動態下依舊保有細膩層次與控制力。
多層介電結構，為極端穩定而生
三相中空導電銅線皆以 HDPE 高介電強度材料包覆，具備耐熱、機械強度高、電場反應快、無毒環保等特性，並以 黑（火）、白（水）、綠（地）明確區分。三芯之間加入 天然棉線條 作為抑振緩衝，進一步吸收微振動與結構諧振。接著採用雙層絕緣紙：吸收振動並穩定介電特性，CPVC 層：強化整體抗扭力、耐壓與結構剛性，雙重屏蔽層：內層科技銅箔、外層高密度 OFC 銅編織網，形成完整金屬介電屏障，有效隔絕 EMI / RFI 干擾，TPV 外層包覆（藍色／橘色）：耐高低溫（-60°C ～ 135°C）、抗油、抗氣候老化，並添加具遠紅外線特性的奈米功能粉末，進一步提升導電效率與抑振能力。TPV 兼具橡膠與塑膠優點，觸感細膩、防滑、回彈佳，同時為可回收環保材質，呼應 Monitor Acoustics 的綠色製程理念。
專為旗艦系統而生的電源核心
SSS-50 MKII 代表著 Monitor Acoustics 在高承載中空導體結構上的再一次重大突破。表面上中空線由七芯轉為六芯設計，看似減少用料，實際上我們並未減少銅絲總量，而是將線絲平均分配於六芯之中，使整體線身結構更為堅實均化、紮實，製程複雜度與精度要求反而大幅提升。從線徑比例、捲繞方向、絞合配比，到後續的熱處理與成型工藝，皆經過反覆驗證與調校。實際剝開後可見 2.8ppm 超低含氧中空蕊絲銅結構，不僅線條俐落、結構穩定，更展現其內在的能量密度與一致性。
以 NASA 技術為核心、MA 精工為靈魂，SSS-50 MKII 帶來前所未有的能量厚度、控制力與音場規模感。無論應用於高階擴大機、電源分配系統或牆內主幹配線，皆能為系統提供更純淨、更穩定、更具權威感的供電品質，讓音樂的層次、動態與細節完整釋放，令人徹底著迷。
＊若玩家以SSS-50 MKII自製電源線，可將屏蔽線併接地線，接於公頭地迴端，進一步強化地迴的電位釋放，與電源能量無阻傳輸。
FEATURES 特點：
導體結構：三相（水、火、地）採用 5.0mm² 6N LC-OFC 高精純銅（超低含氧 2.8ppm）
導體配置：10蕊銅絲 × 六股S絞繞 × 中空氣介電設計
介電防護層：八重結構（LDPE、棉線、雙層絕緣紙、CPVC、銅箔、OFC 銅網、TPV 外層）
外徑尺寸：15.3mm ± 0.2mm
外層分色：藍色、橘色
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SSS-50 MKII
Indoor Three-Core Shielded Isolation Power Line (Bulk Roll)
The world’s only shielded three-core hollow-conductor power line—
designed to captivate through sound alone.
Building on the proven success of Monitor Acoustics’ hollow-core single-conductor entrance cables (HU-165 MKIII, HU-220 MKIII) in reference-grade power systems, the SSS-50 MKII represents a full evolution of our hollow-conductor technology into the realm of high-current, low-impedance indoor three-core power distribution.
Purpose-engineered for large-scale audio systems, flagship amplifiers, professional power routing, and demanding high-current applications, SSS-50 MKII begins at the source with meticulously selected 6N LC-OFC ultra-high-purity copper, featuring an exceptionally low oxygen content of just 2.8 ppm.
Each conductor undergoes multiple stages of annealing and refinement during manufacturing, fully relieving internal metal stress and ensuring long-term stability, consistency, and purity—forming the critical foundation for high-current delivery with minimal distortion.
Hollow Conductor × Aerospace-Grade Craftsmanship × Higher Energy Density
SSS-50 MKII employs a sophisticated conductor architecture in which ten copper strands are bundled into a single unit, while each phase (Live, Neutral, Ground) is formed from six S-twisted bundles, creating a highly stable hollow dielectric core at the center of each conductor.
This structure draws directly from NASA-inspired aerospace conductor design principles, leveraging the physics of the skin effect, where current naturally travels along the outer surface of a conductor at higher frequencies.
The hollow core simultaneously increases effective conduction area, promotes natural airflow, and enhances thermal stability, resulting in faster current transfer, improved heat dissipation, and reduced energy compression under load.
The 10-strand × six-bundle symmetrical geometry effectively cancels inter-conductor magnetic interference, significantly reducing susceptibility to external EMI and RFI, while also suppressing mechanical resonance within the cable itself.
The result is a quieter background, deeper soundstage, and more stable imaging.
The hollow air dielectric further creates a naturally low dielectric constant environment, substantially reducing capacitive effects. This allows high-frequency extension to remain open and unforced, ensures more linear energy transfer, and preserves fine detail and control—even during large-scale dynamic swings.
Multi-Layer Dielectric Architecture — Engineered for Extreme Stability
Each of the three hollow-core conductors (Live / Neutral / Ground) is individually insulated with HDPE (High-Density Polyethylene), a high-dielectric-strength material chosen for its excellent heat resistance, superior mechanical rigidity, fast and stable electric-field response, and non-toxic, environmentally friendly characteristics.
The conductors are clearly color-coded — Black (Live), White (Neutral), and Green (Ground) — ensuring precise phase identification while maintaining structural consistency and long-term reliability under high-current operation.
Between the three cores, natural cotton fillers are introduced to absorb micro-vibrations and structural resonance.
This is followed by a dual-layer insulation paper system that stabilizes dielectric behavior while further damping vibration.
A CPVC layer reinforces torsional strength, pressure resistance, and overall structural rigidity.
Surrounding this is a dual-shield system—an inner high-precision copper foil and an outer high-density OFC braided copper shield—forming a complete metallic dielectric barrier that effectively blocks EMI and RFI contamination.
The outer jacket is formed from TPV (Thermoplastic Vulcanizate), available in Blue or Orange, offering exceptional durability across extreme temperatures (–60°C to 135°C), resistance to oil and environmental aging, and enhanced flexibility.
The TPV compound is infused with nano-scale functional powders exhibiting far-infrared properties, further improving conductivity efficiency and vibration control.
Combining the tactile refinement of rubber with the structural benefits of plastic, TPV is also fully recyclable, aligning with Monitor Acoustics’ commitment to sustainable manufacturing.
The Power Core for Flagship Systems
SSS-50 MKII marks another major breakthrough in Monitor Acoustics’ high-current hollow-conductor technology.
While the hollow structure has evolved from a seven-core to a six-core configuration, no copper mass has been reduced. Instead, conductor material has been redistributed more evenly across six cores, resulting in a denser, more uniform, and structurally robust cable.
This refinement significantly increases manufacturing complexity and precision requirements. Every parameter—conductor diameter ratios, winding direction, strand geometry, thermal treatment, and final forming—has been repeatedly tested and optimized.
When stripped, the 2.8 ppm ultra-low-oxygen hollow copper strands reveal a clean, precise, and mechanically stable internal structure, reflecting exceptional energy density and consistency.
Driven by NASA-inspired engineering and refined through Monitor Acoustics’ artisanal craftsmanship, the SSS-50 MKII delivers unprecedented power weight, control, and soundstage scale.
Whether deployed in high-end amplifiers, power distribution systems, or in-wall main power runs, it provides cleaner, more stable, and more authoritative power—allowing music’s dynamics, layering, and nuance to fully unfold.
FEATURES
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Conductor Structure:
Three phases (Live / Neutral / Ground), each using 5.0 mm² 6N LC-OFC ultra-high-purity copper (2.8 ppm oxygen content) -
Conductor Configuration:
10-strand copper × six S-twisted bundles × hollow air dielectric design -
Dielectric & Shielding Layers:
Eight-layer architecture: LDPE, cotton fillers, dual insulation paper, CPVC, copper foil, OFC braided copper shield, TPV outer jacket -
Outer Diameter:
15.3 mm ± 0.2 mm -
Jacket Colors:
Blue / Orange