

Vox released the 12-watt AC10 in late 1959 as a student model, originally as a 1x10-inch combo and later as a 2x10-inch combo. It was popularised by The Shadows and other British rock 'n' roll musicians and became a commercial success. The company was renamed Jennings Musical Industries, or JMI, and in 1958 the 15-watt Vox AC15 amplifier was launched, "vox" simply being the Latin word for "voice". In 1956, Jennings was shown a prototype guitar amplifier made by Dick Denney, a big band guitarist and workmate from World War II. Jennings's first successful product was the Univox, an early self-powered electronic keyboard similar to the Clavioline. The Jennings Organ Company was founded by Thomas Walter Jennings in Dartford Kent, England after World War II.

1.5 Expansion, Transistors, and Decline.
