Shunyata Research Sigma-X Clock-75 | 75-Ohm BNC Clock Cable
Shunyata Research Sigma-X Clock-75 is a reference 75-ohm coaxial clock cable for digital components that use 75-ohm BNC word-clock or master-clock connections. It uses SPC conductors with a 100% braided SPC shield, PTFE dielectric, BNC connectors, PMZ construction, TAPc, dual-element CMode filtering, and KPIP v2 processing.
Choose Clock-75 only when the connected clock input and output specify a 75-ohm interface; for 50-ohm clock connections, use Sigma-X Clock-50.
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.
We accept a range of payment options, including major credit cards, ACH, wire transfer, and Affirm financing. Online checkout is processed securely through Shopify.
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.
Choose options
Who is Sigma-X Clock-75 best suited for?
Digital clock systems whose BNC clock input and output are specified for 75-ohm operation.
Clock-75 vs. Clock-50
The difference is interface impedance. Use Clock-75 for 75-ohm equipment and Clock-50 for 50-ohm equipment.
Technology
Sigma-X Clock-75 combines Shunyata technologies for electromagnetic control, precision impedance, common-mode noise reduction, shielding, and conductor conditioning. Its model-specific 75-ohm BNC coaxial design uses SPC conductors, a 100% braided SPC shield, PTFE dielectric, PMZ, TAPc, dual-element CMode, and KPIP v2 processing.
TAPc
Patent-pending Transverse Axial Polarizer technology couples to electromagnetic fields surrounding signal conductors and is designed to reduce electromagnetic distortion. Sigma-X Clock-75 uses 35 TAPc elements.
PMZ
PMZ is Shunyata's precision production standard for tightly controlling conductor surfaces, dielectric extrusion, and braided-shield geometry to minimize impedance variance.
CMode
CMode is Shunyata's common-mode filtering technology, designed to reduce common-mode noise without the compression effects associated with conventional filtering. Sigma-X Clock-75 uses a dual-element CMode filter.
KPIP v2
Shunyata Research's proprietary Kinetic Phase Inversion Process is applied to conductor and terminal metals. Sigma-X Clock-75 receives four days of KPIP v2 processing.
75-Ohm BNC Clock Architecture
Sigma-X Clock-75 uses SPC conductors, a 100% braided SPC shield, PTFE dielectric, BNC connectors, and a specified 75-ohm characteristic impedance.
Specifications
Cable type: Coaxial
Conductors: SPC
Shield: SPC 100% braided
Dielectric: PTFE
Connectors: BNC
Characteristic impedance: 75 ohm
PMZ: Yes
TAPc: 35 elements
CMode: Dual element
KPIP v2: 4 days
Standard length: 1.00 m
HiPOT: 1,200 VAC
Choice Audio guidance
Confirm the clock impedance in both component manuals before ordering.
Frequently asked questions
Is Clock-75 a 75-ohm cable?
Yes.
Does it use BNC connectors?
Yes.
What is the standard length?
1.00 meter.