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2. Valve amplifier - Wikipedia

   en.wikipedia.org/wiki/Valve_amplifier

   A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal. Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers in the 1960s and 1970s. Valve amplifiers can be used for applications such as ...

3. Dynaco - Wikipedia

   en.wikipedia.org/wiki/Dynaco

   Dynaco. Founded by David Hafler and Ed Laurent in Philadelphia, Pennsylvania in 1955, 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] Its best known product was the ST-70 tube stereo amplifier. They also manufactured other tube and ...

4. DIY audio - Wikipedia

   en.wikipedia.org/wiki/DIY_audio

   History. Audio DIY came to prominence in the 1950s to 1960s, as audio reproduction was relatively new and the technology complex. Audio reproduction equipment, and in particular high performance equipment, was not generally offered at the retail level. Kits and designs were available for consumers to build their own equipment.

5. Valve audio amplifier - Wikipedia

   en.wikipedia.org/wiki/Valve_audio_amplifier

   A valve audio amplifier ( UK) or vacuum tube audio amplifier ( US) 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. While solid-state devices prevail in most audio ...

6. Dumble Amplifiers - Wikipedia

   en.wikipedia.org/wiki/Dumble_Amplifiers

   Dumble Amplifiers. Dumble was a guitar amplifier manufacturer in Los Angeles, California. In the one-person operation, Alexander "Howard" Dumble (June 1, 1944 – January 16, 2022) [ 1][ 2] made each amp personally. Because of this, Dumble amplifiers are the most expensive boutique amplifiers on the used market, [ 3] and prices have risen rapidly.

7. Single-ended triode - Wikipedia

   en.wikipedia.org/wiki/Single-ended_triode

   Single-ended triode. A SET tube audio amplifier. A single-ended triode ( SET) is a vacuum tube electronic amplifier that uses a single triode to produce an output, in contrast to a push-pull amplifier which uses a pair of devices with antiphase inputs to generate an output with the wanted signals added and the distortion components subtracted.