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Shunyata Research Shunyata - Sigma HC Power Cable


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Shunyata Sigma HC Power Cable

The Finest High-Current Power Cable Made: Product of the Year Award-Winning Shunyata Sigma HC Functions as an Independent Power Conditioner, Cancels Class-Specific Noise Frequencies 

Part of the elite Shunyata Sigma Series of power cables, Sigma High Current (HC) is the result of 15 years of patented science, engineering, and parts development. Winer of The Absolute Sound's Product of the Year Award, it is the finest high-current power cable the high end has ever seen. Sigma cables essentially function as independent power conditioners. Equipped with a six-gauge conductor complement and unique internal construction, Sigma HC is uniquely designed for the world's most demanding amps and power conditioners. It is also tested for optimum delivery of DTCD (Dynamic Transient Current Delivery). All three Sigma models cancel the specific frequencies of noise commonly associated with the class of components for which they are designed, be it digital, analog, or high-current gear. You've never heard your system sound as effortless as it will when paired with Sigma.

"What I can say is that the Sigma power cords are the best I have ever used and that each one's performance exceeded my expectations. They provided more than a mere incremental improvement in my system over the company's previous offerings and the list prices reflect that. While an entire "loom" of the cords will be out of many peoples' reach, even individual cords yielded impressive results."
The Audio Beat

Exclusive Parts and Construction, Passive and Non-Reactive Noise-Filter Elements
The Sigma High Current (HC) power cord is exclusively developed for extreme high-current applications such as amplifiers and power conditioners tasked with powering full systems of electronics. Every facet of Sigma HC is optimized for maximum DTCD (Dynamic Transient Current Delivery) efficiency due to its massive six-gauge conductor complement and minimal measured impedance. Sigma HC also utilizes Shunyata founder Caelin Gabriel's proprietary ZiTron circuit, specifically designed to reduce the frequencies of noise most commonly associated with high-current components such as amps, projectors, and multi-component power conditioners. Noise-filter elements used in Sigma are entirely passive and non-reactive, so, unlike most power conditioners, Sigma models never get in the way of current flow or interfere with the power supplies of the components. In other words, they are complementary to all electronic power supplies within their named classification and allow all components to perform at peak efficiency both in terms of current delivery and lowered noise.

"Shunyata continues to push the state-of-the-art in AC power. The Sigma is the best cord Shunyata has made, improving on previous models by deepening background silences , increasing resolution at the lowest levels, rendering textures more realistically, allowing the rest of your components to sound their best. Robert Harley's reference."
- The Absolute Sound, 2015 Product of the Year Award

ZiTron Circuits Reduce Noise at First Point of Electrical Contact
The defining feature of each Sigma power cord relates to Shunyata's highest-performing ZiTron circuits, which measurably reduce noise at the first point of electrical contact with component power supplies. No power conditioner can capture noise at the first stage of a component's electrical circuit and isolate that noise from other components. This ultra-efficient means of noise reduction virtually eliminates CCI (Component-to-Component Interference) and protect electronics in the system from being affected by commonly shared noise. Essentially, Sigma power cords function as independent, high-current power conditioners. All three Sigma models cancel the specific frequencies of noise associated with the class of components for which they are designed: Digital, Analog, or High-Current.

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