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A CONVERGENCE OF SCIENCE AND ART
Sigma Series cables showcase technological innovation and design execution that simply does not exist elsewhere – at any price. Sigma Series cables combine meaningful parts innovations with objective measurement and an artisan’s eye for construction quality. Unlike many cost-no-object cable products that have little in the way of discernible science, Sigma Series products incorporate an array of definable technologies that sets the standard for quality and performance in the cable industry.

SIGMA NR POWER CABLES

The Sigma NR power cord builds upon the worldwide success of its predecessors with massive 6-gauge (VTX™) hollow-core conductors and Shunyata’s own CopperCONN®, solid copper connectors. The Sigma NR’s meticulous design and vanishingly low-resistance to peak current (DTCD®) delivers unparalleled performance when used with even the most current-hungry amplifiers. It’’s built-in wide-bandwidth noise filtration system reduces power-line and component generated power supply noise, making it an ideal choice for source components, power amplifiers and digital systems. Shunyata’s Sigma NR power cord’s advanced materials and standard-setting technology raise the performance bar for others to follow.

TECHNOLOGICAL INNOVATION

As the performance vanguard in the Shunyata Research’s cable line-up; Sigma Series cables take the term ‘state-of-the-art’ to an entirely new level with the introduction of two new cutting-edge technologies. The first, integrated in the Sigma Series interconnects and digital cables, is the ‘Transverse Axial Polarizer’ (TAP). It minimizes a form of ‘micro-distortion’ identified as ‘electromagnetic polarization’ that reduces ‘sonic glare’ while increasing clarity and coherency. The second technology incorporates a proprietary device called HARP that reduces current resonances within speaker cables – a concept that is sonically analogous to the use of diffusion panels to treat frequency irregularities in room acoustics.
~ Patents Pending ~

More info
https://shunyata.com/cable-series-overview/sigma-cable-series/