Dynaco

About Dynaco

Dynaco was an American hi-fi audio system manufacturer, founded in 1955 by David Hafler and Ed Laurent in Philadelphia. The brand is renowned for its affordable yet high-quality audio components, especially vacuum tube amplifiers such as the famous ST-70 tube stereo amp, which was available as a kit or pre-assembled. Dynaco’s products included tube and solid-state amplifiers, preamplifiers, radio tuners, and bookshelf loudspeakers. The ST-70 was particularly influential, known for its reliable circuit design, ultralinear output transformers, and significant impact on maintaining consumer interest in tube audio even as solid-state technology rose. Dynaco was liquidated in 1980, but its legacy continues among audio enthusiasts and through various successor ventures.