Audio Research is one of the oldest continually operating manufacturers in American audio. The company was founded in 1970 in Minneapolis, Minnesota with one goal in mind: to advance the state-of-the-art in music reproduction. Today, Audio Research remains a performance-oriented company by philosophy and design. New product introductions are driven only by genuine advances in technology and performance -- the HIGH DEFINITION that is the hallmark of the company's products. The company has grown steadily over the last 40 years, with a network of top audio specialist retailers across North America and distributors throughout Europe, Asia and South America. The company occupies a 48,000 square-foot, technically-advanced production plant and administrative headquarters in Plymouth, Minnesota, where approximately 50 technical, assembly and support staff guide the product line from concept to finished goods. Audio Research was instrumental in refocusing the audio industry on designing products for musical performance, and not merely for the sake of new technology or mass-market pricing. Audio Research was founded by William Z. Johnson, who began designing custom audio electronics in the early 1950's and who also operated a specialty audio retail store until the mid-1960's. Johnson's efforts almost single-handedly revived vacuum-tube designs at a time when major industry manufacturers had abandoned this technology in favor of low-cost solid-state devices which were markedly inferior in terms of musical accuracy, a fact widely acknowledged today. Many industry observers consider Johnson one of the true originators of the entire concept of "high-end" audio as it exists today -- an area of technological expertise in which American companies remain the clear innovators and leaders on a global scale.