Vox is a musical equipment manufacturer which is most famous for making the Vox AC30 guitar amplifier, the Vox electric organ, and a series of innovative but commercially unsuccessful electric guitars and bass guitars. Founded in Kent, England, Vox has been owned by the Japanese electronics firm Korg since 1992.
The Jennings Organ Company was founded by Thomas Walter Jennings in Dartford Kent, England after World War II. Jennings’s first successful product was the Univox, an early self-powered electronic keyboard similar to the Clavioline.

In 1956 Jennings was shown a prototype guitar amplifier made by Dick Denney, a big band guitarist and an old workmate from World War II. The company was renamed Jennings Musical Instruments, or JMI, and in 1958 the 15-watt Vox AC15 amplifier was launched. It was successful, popularized by The Shadows and other British rock ‘n’ roll musicians.
In 1959, with sales under pressure from the more powerful Fender Twin and from The Shadows, who requested amplifiers with more power, Vox produced what was essentially a double-powered AC15 and named it the AC30. The AC30, fitted with alnico magnet-equipped Celestion “blue” loudspeakers and later Vox’s special “Top Boost” circuitry, helped to produce the sound of the British Invasion, being used by The Rolling Stones, The Beatles, The Kinks and the Yardbirds, among others.