单词	amplifier
释义	amplifier /ˈamplɪfʌɪə / noun 1An electronic device for increasing the amplitude of electrical signals, used chiefly in sound reproduction.This makes it suitable for audio applications, including audio amplifiers and preamplifiers, home entertainment system, mixing desks and audio recording equipment.... Hearing aids are electronic devices made up of a microphone, an amplifier, a loudspeaker and a battery. The apparatus includes two visual indicators, two amplifiers, and a logic circuit. 1.1A device consisting of an amplifier combined with a loudspeaker and used to increase the volume of the sound produced by electric guitars and other musical instruments.With the drum cracks, cymbal hits, and nearby guitar and bass amplifiers, my musical career a decade ago was sort of like working in a rifle range.... Sometimes the surround sound processor and the amplifier are combined into a surround sound receiver, to save you a little bit of money. Ty plugged his electric guitar into the amplifier on the stage.
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