amplifier

noun

am·​pli·​fi·​er ˈam-plə-ˌfī(-ə)r 

: one that amplifies

specifically : an electronic device (as in a stereo system) for amplifying voltage, current, or power

Examples of amplifier in a Sentence

He plugged his electric guitar into an amplifier.

Recent Examples on the Web

Because artists move around on stage or might get too close to the drum kit or guitar amplifiers, that noise can spill over into the vocal mix, totally messing up the overall sound balance. —Mark Sparrow, Forbes, 22 Dec. 2024

The drivers are powered by a class D amplifier pushing out 30 watts per speaker. —PCMAG, 17 Dec. 2024

Traditionally, critics have played the dual role of doorman and amplifier, deciding which literature or music or film (to name just a few media) is worthwhile, then augmenting the experience by giving audiences more context. —T.m. Brown, The Atlantic, 16 Dec. 2024

For those who might want a more powerful amplifier in the future, the MSA5500’s internal amplifier can be bypassed and the pre-out sent to a power amp. —Mark Sparrow, Forbes, 5 Dec. 2024

Word History

Etymology

amplify + -er entry 2

First Known Use

1546, in the meaning defined above

Phrases Containing amplifier

• amplifier host

Kids Definition

amplifier

noun

am·​pli·​fi·​er ˈam-plə-ˌfī(-ə)r 

: one that amplifies

especially : a device usually using electron tubes or transistors to obtain an increase of voltage, current, or power

Medical Definition

amplifier

noun

am·​pli·​fi·​er ˈam-plə-ˌfī(ə)r 

: one that amplifies

specifically : an electronic device (as in a computer or sound-reproducing system) for amplifying voltage, current, or power