shunyata.com
The Audio Beat: SIGMA Power Cords - Shunyata Research
August 2015: audiostream.com AudioBeat reviewer Vance Hiner writes a comprehensive review of the SIGMA Model power cords, including the SIGMA HC (High-Current), SIGMA ANALOG and SIGMA DIGITAL model. Vance’s careful review reflects the experience reported by industry professionals, studios and customers who have been tested SIGMA power cords measurable effect on noise and system performance.