The Sigma HC is the highest performance variant of all the Sigma Zitron models. Featuring a gigantic 6AWG effective weight and surprising flexibility, it's no surprise that this is also the best sounding variant in this series. When launched initially Shunyata's intention was that it would be solely used for high-current-demand devices like power amplifers, subwoofers and power conditioners. However, it rapidly became apparent that the gigantic VTX geometry also gave the Sigma HC a huge advantage when used with lower current-draw devices like sources and preamps!
Like all Shunyata cords of the time, the Zitron Sigma HC is a big, bold and beautiful sounding cable, much more fleshed out than its stablemates with better instantaneous transients and a relaxed, effortless sound to suit virtually any system.
ZiTron Filters
The Sigma Series power cables employ a modified ZiTron circuit which audibly and measurably reduces power line noise. Every electronic component s power supply generates RFI and EMI radiation which can contaminate the power line. The TRON noise circuits, that are built into the Sigma s connectors, intercepts this noise before it has the opportunity to be transmitted through the power cord to the power distribution buss and ultimately onto the power line itself. This stops radiated noise at its source where noise suppression is most effective!
CopperConn Connectors
Caelin Gabriel designed the CopperCONN connectors to be the highest performing power connectors and outlets on the market. Instead of coating a common plug with 5-10 microns of gold, silver or nickel plating and calling it audiophile grade , the CopperCONN connectors and outlets use a base metal of solid Tellurium Copper. This gives the CopperCONN connectors a higher level of conductivity than connectors using brass or bronze.
An ultra-thin protective plating is applied to protect the pure copper from oxidation which ensures the long term performance of these purpose built designs. The CopperCONN connectors are cryogenically treated with the exclusive Alpha Cryogenic Process to further enhance performance. The CopperCONN connectors have superior grip and electrical contact integrity for a secure connection. CopperCONN connectors are quite simply the finest available.
VTX Conductors
Shunyata Research developed what may be the ideal conductor geometry for signal and power propagation. VTX wire geometry simulates a hollow conductor, which minimizes skin effect, reduces inductive reactance and improves the instantaneous transfer of current. VTX geometry conductors are used in Shunyata s HYDRA models, signal cables and reference-grade power cords such as the SIGMA Series of power cords.
Alpha Cryogenic Process
Shunyata Research s commitment to producing the finest parts and materials is evidenced by its own computer controlled, Cryogenic Treatment Plant. This process is used to treat the critical contacts, wires and other metal parts that are used in Shunyata s power cords, signal cables and power-distributors. Shunyata Research developed an improved treatment called the Alpha Cryogenic Process which alters the inner chamber s atmospheric condition. Although unseen by the user, this process is costly and represents but one of many critical investments in technology, materials and procedures that sets Shunyata Research s products apart in terms of value and performance.
Specifications:
Cable Diameter: 1.32 inches
High-Current (HC) Version: 3x10 AWG Conductors = 6 AWG aggregate
