Shunyata Research makes one of the most respected audiophile AC power isolation products on the market today. Founded by Caelin Gabriel, who worked as a research scientist for the NSA, Shunyata Research has several US patents. The company proudly proclaims "Superior science, exclusive parts, exquisite hand craftsmanship, and patented technologies."

Shunyata Research also makes signal and power cables.

Notable Shunyata Research products include:

Shunyata Research Hydra
Shunyata Research Guardian
Shunyata Research CD Series of power cables
Shunyata Research Aeros Series signal cables

Similar to Shunyata Research are companies that include Ultralink, Richard Gray's Power Company, and APC.