Shunyata Research Sigma-X Bi-Wire Speaker Cable | Reference Bi-Wire Cable
Shunyata Research Sigma-X Bi-Wire Speaker Cable brings the Sigma-X speaker-cable platform to loudspeakers with two sets of binding posts. Priced per pair, it uses 6-gauge VTX-Ag conductors, dual TAPc modules, dual HARP 20 modules, fluorocarbon dielectric and four days of KPIP v2 processing, with fixed gold/copper or STIS v3 terminals.
Choose Bi-Wire when your speaker's terminal layout calls for separate high- and low-frequency connections from one amplifier channel. For one set of posts, see the standard Sigma-X Speaker Cable; for three, see Sigma-X Tri-Wire. See all our Shunyata Research cables and power products.
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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SIGMA-X BI-WIRE SPEAKER CABLE
Shunyata Research Sigma-X Bi-Wire Speaker Cable is a reference loudspeaker cable, priced per pair, with 6-gauge VTX-Ag conductors, dual TAPc modules with 100 elements, dual HARP 20 modules, fluorocarbon dielectric and four days of KPIP v2 processing, with fixed gold/copper or STIS v3 interchangeable terminals.
WHO IS SIGMA-X BI-WIRE SPEAKER CABLE FOR?
Reference loudspeakers designed for separate high- and low-frequency terminal connections from a single amplifier channel.
BI-WIRE VS. STANDARD SIGMA-X
Choose Bi-Wire when the loudspeaker is intended to be wired to two terminal sections. Use the standard Sigma-X Speaker Cable for conventional single-wire connections.
TECHNOLOGY
 | TAPc (Transverse Axial Polarizer) is Shunyata Research's patent-pending technology that couples to the electromagnetic fields around conductors. It works like a polarizer, passively reducing electromagnetic distortion that can present as glare or compression. Sigma-X Bi-Wire Speaker Cable uses dual TAPc modules with 100 elements. |
 | HARP addresses current drift and audio-frequency current resonances that can build up in speaker cables, much like standing waves in a room. The HARP module breaks up those resonances, which Shunyata says improves resolution, focus and coherence. Sigma-X Bi-Wire Speaker Cable uses dual HARP 20 modules. |
 | VTX-Ag conductors combine a pure-silver center core with a concentric outer ring of pure copper. Sigma-X Bi-Wire Speaker Cable uses this geometry at 6 gauge. |
 | Fluorocarbon dielectric offers very low dielectric absorption, high dielectric strength and excellent heat resistance. |
 | KPIP v2™ is Shunyata Research's proprietary Kinetic Phase Inversion Process, applied to the conductor and terminal metals. Sigma-X Bi-Wire Speaker Cable receives four days of KPIP v2 processing, which Shunyata says greatly reduces burn-in time. |
 | STIS v3 is Shunyata Research's interchangeable terminal system with gold-plated copper terminals. Sigma-X Bi-Wire Speaker Cable is available with STIS v3 or fixed gold/copper terminals. |
SPECIFICATIONS
Conductors: VTX-Ag™ Gauge: 06 Dielectric: Fluorocarbon Terminals: Gold/copper fixed or STIS v3 Terminations to Specify: One for the amplifier end, two for the speaker end TAPc: Dual module / 100 elements | HARP: Dual 20 Color: Black flex KPIP v2 Processing: 4 days Standard Length: 2.50 meters Pricing: Per pair Safety Assurance: |
CHOICE AUDIO GUIDANCE
Confirm your loudspeaker's binding-post layout before ordering. Bi-wire and bi-amp are not interchangeable terms; contact Choice Audio if you want us to verify the correct cable configuration.
Fixed terminations or STIS?
We highly recommend fixed terminations. The connectors are higher quality, make a better connection, and are more solid and durable over years of use. The trade-off is flexibility. With STIS you can mix and match connectors, which is handy if you expect to change amplifiers or speakers down the road. If your system is settled, fixed terminations are the way we'd go.
How connectors are chosen
Shunyata builds every speaker cable to order, so after you order, we'll contact you to confirm your connectors before anything is built. We'll go over fixed or STIS, and bananas or spades at the amplifier and speaker ends. If you're not sure what your equipment needs, we'll help you figure it out. You're also welcome to call us first at 651-217-2083.
FREQUENTLY ASKED QUESTIONS
Is the price for one cable or a pair?
A pair. Shunyata prices its speaker cables per pair.
Which terminations do I need to choose?
Three per cable: one for the amplifier end and two for the speaker end.
Is this for bi-amping?
This listing is for the bi-wire cable configuration. Confirm your system topology before ordering.
What is the standard length?
2.50 meters. We list lengths up to 4.5 meters.