KEF is a British company specialising in the design and production of a range of high-end audio products, including HiFi speakers, subwoofers, architecture speakers, wireless speakers, and headphones. It was founded in Maidstone, Kent in 1961 by a BBC engineer named Raymond Cooke (1925–1995).

Maidstone is the largest town in Kent, England, of which it is the county town. Maidstone is historically important and lies 32 miles (51 km) east-south-east of London. The River Medway runs through the centre of the town, linking it with Rochester and the Thames Estuary. Historically, the river carried much of the town's trade as the centre of the agricultural county of Kent, which is known as the Garden of England. There is evidence of settlement in the area dating back before the Stone Age. The town, part of the borough of Maidstone, had an approximate population of 100,000 in 2019. Since World War II, the town's economy has shifted from heavy industry towards light industry and services.