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 had sales of $17 million, employed over 500 people and sold over 30,000 speakers a year before it was sold to Singer Corp. in 1964. Later it was bought by Electro Audio Dynamics Inc. and moved to California in 1980.
KLH was then acquired by Kyocera Ltd, a Japanese conglomerate, and production was shifted overseas. Kyocera decided to stop manufacturing audio products in 1989, and sought a buyer for the KLH brand.
The company is now known as KLH Audio Systems and located in Santa Ynez, California. Formerly known as Wald Sound and Verit Industries.