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.

Please contact your authorized Shunyata Research dealer or regional distributor for pricing.

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Shunyata Research’s Sigma Series is quite simply our highest performing speaker cable. Exclusive HARP technology reduces current resonances within the cable while ΞTRON® technology eliminates dielectric absorption distortion.

KPIP™ eliminates burn-in issues.

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Wire: 6-gauge
Termination: Gold/copper or bare/copper terminals







Over more than 2 decades, the reliability and durability of Shunyata Research products has become a legendary attribute of the brand.  Shunyata products are completely non-reactive and run cool to the touch.  They do not hum, vibrate, buzz, or generate heat and do not require any ventilation. Despite heavy-use applications in studios, medical labs, and home environments, Shunyata Research products maintain an almost zero failure rate.


In an era of products that are mass-produced, Shunyata Research invests in training career craftsman who build our products by hand at our factory in Poulsbo, Washington. The exceptional fit, finish, and attention to detail has become a hallmark trait of Shunyata Research products going back to its inception in 1998. Shunyata Research has been building some of the finest power and cable products in the industry for more than twenty years. The commitment to building durable products that are designed to last a lifetime elevates our products to the top of their class.


Safety and quality control is job one at Shunyata Research. Before anything leaves the factory, we test each and every product thoroughly and carefully for safety and quality. This explains the long-term success of Shunyata Research products in the professional recording, medical, scientific, and consumer industries. Shunyata Research’s impeccable product safety and reliability track record for the past 23 years speaks for itself.



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The unparalleled craftsmanship and build quality of Shunyata Research products is backed by a limited lifetime warranty. This demonstrates our commitment to building the finest products on the planet and providing exceptional customer support.
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