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KLH is an audio company founded in 1957 as KLH Research and Development Corporation in Cambridge, Massachusetts, United States, by Henry Kloss, Malcolm S. Low, and Josef Anton Hofmann originally to produce loudspeakers. KLH was once the largest loudspeaker company in the world, employing over 500 people and shipping over 30,000 speakers a year to retailers and distributors throughout six continents.
KLH has deep roots firmly planted in high-fidelity sound reproductionas a ground-breaking company of firsts, launching the first-ever high-selectivity FM table radio, Model Eight, the first full-range electrostatic loudspeaker, Model Nine, highly regarded by the audiophile community and picked by Stereophile magazine as “one of the twelve best loudspeakers ever built”, the first portable solid state record player named the Model Eleven, and introduced Ray Dolby of Dolby Laboratories, to the consumer product market through the first reel-to-reel tape recorder featuring the Dolby noise reduction, the Model Forty.
KLH also introduced some of the best selling loudspeakers in the world over the course of many years, most notably, the Model Five, Model Six, and Model Seventeen, featuring the acoustic suspension loudspeaker design originally developed by Edgar Villchur and our founder Henry Kloss.