AudioQuest

AudioQuest, founded in 1980 by William E. Low, is a manufacturer of audio/video cables, digital-to-analog converters, headphones, power-conditioning products, and various audio/video accessories—all claimed to match high levels of performance and sold at high prices.
AudioQuest is based in Irvine, California, has offices in the Netherlands and distributes its products to approximately 65 countries throughout the world.
History.
AudioQuest's founder, William E. Low, has described himself as "an absolute hedonist." In the December 2008 issue of "The Absolute Sound", Low explained to TAS's Neil Gader, "Everything I’ve learned about hi-fi or cables is purely the result of being interested in getting high on music."
In his early days of selling high-end audio equipment, William E. Low allegedly discovered that the sound of an audio system was easily influenced by the quality of the cables connecting its various components. Hi-fi journalist, Richard Hardesty explained: 
"With experimentation Bill found that better interconnect and speaker cables could make bigger audible improvements than many costly upgrades to amplifiers and speakers. And he recognized the opportunities afforded by this new category of audio components. He founded AudioQuest to explore and develop new and innovative wire, connectors and accessories."
Although AudioQuest remains best known for its analog and digital cables, the company has entered other product categories, such as the DragonFly USB digital-to-analog converter/headphone amplifier, recipient of numerous awards, including: "Stereophile" 's 2012 "Computer Audio Component of the Year" and 2012 "Budget Component of the Year;" "Tone Audio" 's 2012 "Digital Product of the Year;" Computer Audiophile's 2012 "Computer Audiophile Product of the Year;" AudioStream's "Greatest Bits", and What Hi-Fi?'s 2014 "Product of the Year."
At the 2015 Consumer Electronics Show, AudioQuest entered the headphone market with its NightHawk over-the-ear headphones designed by Skylar Gray. In October 2014, NightHawk was named 2015 CES Innovation Award Honoree (Headphones) and 2015 Best of Innovation Winner (Eco-Design and Sustainable Technologies). The NightHawk was followed by the critically successful NightOwl headphone and a headphone stand called Perch.
Ethernet cable evaluation.
AudioQuest sells Ethernet cables that they claim are "directional." While this "one of a kind" strange concept of directional Ethernet cable is fundamentally wrong and goes against very basic technical principles in digital electronics of the Ethernet standard IEEE 802.3 : One independent blinded ABX test of the Ethernet cables at The Amazing Meeting in 2015 found that the cables do not produce a measurable effect. Independent physical testing of the data transmission quality of AudioQuest's Ethernet cables claimed to show they perform no better than class compliant cables costing less than 1/10 the price due to the near-end crosstalk. Although admitted in the article they weren't equipped to test Category 7 cables and instead tested the cable to the lower Category 6a spec. Also shown in one area the AQ cable bested all other cables at the limit of cat 6 testing/ standard speed of 500 MHz while unable to show a possible higher cat 7 standard of 600 MHz due to lower limit of 500 MHz on the cat 6a standard test.
RCA cable evaluation.
An independent AudioQuest RCA cable review : measured no difference to a generic RCA cable, except that mains leakage in the AudioQuest product was slightly higher.