Valve amplifier
Type of electronic amplifier / From Wikipedia, the free encyclopedia
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This article is about valve (vacuum tube) amplifiers in general. For a more detailed discussion on the use of valve amplifiers in specific applications, see Valve audio amplifier, Valve RF amplifier, and Valve audio amplifier technical specification. For tube amps from the Valve company, see Valve Amplification Company.
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 guitar amplifiers, satellite transponders such as DirecTV and GPS, high quality stereo amplifiers, military applications (such as radar) and very high power radio and UHF television transmitters.
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