Ampeg bass amps are so universally revered, it’s hard to imagine a time when they weren’t synonymous with electric bass amplifiers. But what started from a modest idea — literally, an “amplified peg” that would install into an upright bass — in Everett Hull’s modest shop in Midtown Manhattan in the 1930s, has become a towering name in the world of bass amplification.

This is a great article from Universal Audio. You can even hear how each amp sounds using the Brainworx developed plug-ins.