Steven Fryette founded VHT Amplification in Studio City, Los Angeles, California in 1989. Steven Fryette had started out in 1976 as a technician at Valley Arts in California doing repairs and custom work. The company name was changed from VHT to  Steven Fryette Design, Inc in 2009 and began using the Fryette Amplifcation brand name for its products. The VHT brand name is still in use by a different company. Fryette Amplification manufacture hand built electric guitar amplifiers, speaker cabinets, power amplifiers, sound effects pedals and pedalboard accessories.

Source: Fryette Amplification website (8 October 2019)