Hilgen

Hilgen is a defunct American amplifier manufacturer.
Company information.
The company was started in the 1960s in Hillside, NJ. The name "Hilgen" is a combination of "Hillside" and "Gentul." Jack Gentul (1920–2000) was the founding innovator behind the Hilgen products. 
The company made both guitar and bass models, with a T indicating a guitar model and a B indicating a bass model.