After Leo Fender introduced his revolutionary new Precision electric bass in 1951 he had to come up with an amplifier that could handle the new instrument’s low end power.
The first Fender Bassman was released in 1952, it featured a 15″ speaker and 26 watts of all tube power. It basically was a guitar amp with a little more low end response, but it set the stage for all bass amps to come that would literally change music forever.