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Dynaco was an American hi-fi audio system manufacturer popular in the 1960s and 1970s for its wide range of affordable, yet high quality audio components. [1] Founded by David Hafler and Ed Laurent in Philadelphia, Pennsylvania in 1955, it's best known product was the ST-70 tube stereo amplifier.
E.H. Scott Radio Laboratories is sometimes confused with H.H. Scott. E.H. Scott was founded in 1925 by Chicago resident Ernest H. Scott. Its first product was the World's Record Super 8, a TRF (tuned radio frequency) design with typical harness wiring with 16 gauge silvered solid core copper wire employed in an array configuration that was typical to radios at the time. This construction ...
A valve audio amplifier or vacuum tube audio amplifier is a valve amplifier used for sound reinforcement, sound recording and reproduction. Until the invention of solid state devices such as the transistor , all electronic amplification was produced by valve (tube) amplifiers.
LEAK TL/12 Point One Amplifier. The first commercially produced amplifier with distortion of 0.1% was the LEAK Type 15 "Point One" of 1945, using KT66 vacuum tubes (valves) connected as triodes, with 26 dB feedback over 4 stages including the output transformer. In 1948 LEAK produced the TL/12 which was also rated at 0.1% but featured improved ...
Fisher Allegro Model X19 Tube 20 watt stereo amplifier and matching FM Multiplex Tuner, c. 1962 Fisher Marketing Brochure and Component Price List circa 1964 Fisher Custom Electra Console – 1967 – Model E-492-W – 21-R Solid State Chassis – 45 Watts – Made in US – Turn Table: Dual 1010 (W. Germany).
The model EICO HF-81 integrated tube amplifier is just one of several highly regarded products manufactured by EICO during this period. [6] EICO is also known for "monoblock" amplifiers such as the HF-50 and HF-35, stereo integrated amplifiers such as the ST-40 and ST-70, as well as many other amplifiers and preamplifiers.