WEBER-HYDRAULIK EASYPROP Unlike analogue valve amplifiers, the EasyProp simply requires a laptop or smartphone and has a proportional-integral-derivative controller that allows for control loops ...

A five-watt guitar amplifier. My grandma had bought it at a Dunedin music shop in 1963 as a gift for my father, part of a cheap guitar and valve amp package. It had moved with him to Clyde in the ...