Mint condition, top of the line digital clock cable from Shunyata Research. Sigma Clock-50 (50 ohm), BNC connectors,1.5 meter. I tried every clock cable I could find, Transparent, Nordost, Audioquest, and the Shunyata Sigma are the best I ever heard. In my system they gave astonishing improvement in detail, soundstage and tonality. MSRP for 1.5 meter its $2180, selling for less than half that, $950 each.
These have precision matched impedance (tighter tolerance than any I know), VTX geometry, Transverse Axial Polarizer(improves the sonic performance of the cable by modifying the behavior of the electromagnetic wave that surrounds the signal cable). Used between a master clock and DAC they are a game-changer.
Here is some information on these cables from Shunyata:
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.
Sigma digital cables feature Shunyata Research’s exclusive patent-pending TAP Polarizer technology. TAP reduces electromagnetic polarization distortion.
Ohno Continuous Cast Copper and PMZ conductors with exotic fluorocarbon dielectrics make for a true reference quality digital cable.
Cable: 50-ohm coaxial PMZ, FEP dielectric, silver-plated braided shieldingTermination: True 50-ohm BNC compression connectorsCharacteristic Impedance: 50-ohm
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