am·​pli·​fi·​er | \ ˈam-plə-ˌfī(-ə)r How to pronounce amplifier (audio) \

Definition of amplifier

: 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 Top options include Meridian sound systems with as many as 29 speakers and up to 1430 watts of amplifier power. Eric Stafford, Car and Driver, 10 May 2022 Harnessing more than 30 years of British amplifier-building experience, the new Ultima Pre 3 takes advantage of the latest developments in advanced and low-distortion power supplies. Mark Sparrow, Forbes, 4 May 2022 Police said unidentified suspects also nabbed two electric guitars and an amplifier, likely sometime Friday night or Saturday morning. Rachel Desantis,, 9 Feb. 2022 On everything from Covid-19 mitigation measures (or a lack thereof) to critical race theory to the mental acuity of President Joe Biden, DeSantis has used Fox as both a guidepost and an amplifier of where to stand on these issues. Chris Cillizza, CNN, 1 Apr. 2022 On this day in March, Watkins plugs his amplifier into a 2,000-watt power inverter with what looks like jumper cables attached to a battery in the grass. Keith Bierygolick, The Enquirer, 24 Mar. 2022 The Z9Ks will deliver a total of 85W of amplifier power, with 60W available from the X95Ks. John Archer, Forbes, 4 Jan. 2022 At the heart of the M20 HD is a digital amplifier with a healthy output of 65 watts per channel. Mark Sparrow, Forbes, 21 Dec. 2021 The memcached amplifier can deliver attacks that are as much as 51,000 times their original size, making it by far the biggest amplification method ever to be used in the wild. Dan Goodin, Ars Technica, 28 Jan. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'amplifier.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of amplifier

1546, in the meaning defined above

History and Etymology for amplifier

amplify + -er entry 2

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Time Traveler for amplifier

Time Traveler

The first known use of amplifier was in 1546

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Dictionary Entries Near amplifier

amplification factor



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Statistics for amplifier

Last Updated

21 May 2022

Cite this Entry

“Amplifier.” Dictionary, Merriam-Webster, Accessed 23 May. 2022.

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More Definitions for amplifier


am·​pli·​fi·​er | \ ˈam-plə-ˌfī-ər How to pronounce amplifier (audio) \

Kids Definition of amplifier

: a device that increases the strength of electric signals so that sounds played through an electronic system are louder


am·​pli·​fi·​er | \ ˈam-plə-ˌfī(ə)r How to pronounce amplifier (audio) \

Medical Definition of amplifier

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

More from Merriam-Webster on amplifier

Nglish: Translation of amplifier for Spanish Speakers Encyclopedia article about amplifier


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