Shunyata Research Sigma-X NR Power Cable | Reference Noise-Reducing Cord
Shunyata Research Sigma-X NR is the reference noise-reducing power cable in the Sigma-X family for amplifiers, preamplifiers, DACs, streamers, analog sources, and other high-performance components. It combines 6-gauge VTX-Ag conductors with Gen3 NR noise reduction, dual TAPc polarizers, CopperCONN connectors, fluorocarbon dielectric materials, and KPIP v2 processing.
Choose Sigma-X NR when you want reference-level power-line noise reduction across a wide range of components without stepping up to the QR model's patented QR/BB current-reserve technology.
Most products are ordered from the manufacturer, and lead times range from a few days to several weeks. We'll confirm your exact ship time before payment is processed. Free shipping on orders of $1,000 or more within the lower 48 states; smaller orders ship at FedEx rates. Alaska, Hawaii, and U.S. territories: please contact us for a shipping quote.
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Wondering how this will sound in your system? Many products are eligible for our 10-day Home Audition Program, so you can listen in your own home before deciding to keep it. Call 651-217-2083 or email sales@choiceaudio.com for details.
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Who is Sigma-X NR best suited for?
Amplifiers, preamplifiers, DACs, streamers, phono stages, and other high-performance components that benefit from Sigma-X reference noise reduction.
Sigma-X NR vs. QR
NR provides the Sigma-X Gen3 NR platform without QR's patented QR/BB current-reserve technology.
Technology
Sigma-X NR combines Shunyata Research technologies for noise reduction, electromagnetic control, conductor geometry, connector integrity, dielectric performance, and conductor conditioning. The NR model uses Gen3 NR, dual TAPc polarizers, 6-gauge VTX-Ag conductors, CopperCONN connectors, fluorocarbon dielectric materials, and KPIP v2 processing.
TAPc
Patent-pending Transverse Axial Polarizer technology couples to the electromagnetic fields surrounding conductors and is designed to reduce electromagnetic distortion. Sigma-X NR uses two TAPc polarizers.
Gen3 NR
Gen3 NR is Shunyata's power-cable noise-reduction architecture. Sigma-X NR is specified for greater than 6 dB of noise reduction at 1 MHz.
VTX-Ag
VTX-Ag geometry combines a pure-silver center conductor with a concentric pure-copper outer conductor. Sigma-X NR uses this architecture in a 6-gauge configuration.
CopperCONN
Sigma-X NR uses Shunyata CopperCONN AC and IEC connectors with carbon-fiber bodies.
Fluorocarbon
Fluorocarbon dielectric material is selected for low dielectric absorption, high dielectric strength, and heat resistance.
KPIP v2
Shunyata Research's proprietary Kinetic Phase Inversion Process is applied to conductor and terminal metals. Sigma-X NR receives four days of KPIP v2 processing.
Specifications
Conductors: VTX-Ag
Gauge: 06
Construction: 1-inch tube
Dielectric: Fluorocarbon
Noise reduction: greater than 6 dB at 1 MHz
TAPc: 2 polarizers
AC/IEC: CopperCONN Carbon-Fiber
Standard length: 1.75 m
KPIP v2: 4 days
HiPOT: 4,500 VAC
Choice Audio guidance
NR is the versatile Sigma-X choice when reference-grade power-line noise reduction is the priority across source and amplification components.
Frequently asked questions
Can NR be used on amplifiers?
Yes. Shunyata specifies NR for amplifiers as well as source and line-level components.
Does NR have QR/BB?
No.
What is the standard length?
1.75 meters.
SPECIFICATIONS
Conductors: VTX-Ag Gauge: 06 Construction: 1″ tube Dielectric: Fluorocarbon Noise Reduction: Tech: | AC Connector: CopperCONN™ Carbon-Fiber IEC Connector: CopperCONN™ Carbon-Fiber KPIP v2 Processing: 4-days Color: Black flex Standard Length: 1.75 meters Safety Assurance: |