1. an electronic device that increases the strength of electrical signals, especially audio signals
2. a person or thing that makes something stronger, larger, or more intense
Usage: figurative

Examples

• The guitar amplifier made the music loud enough for the entire audience to hear.
• She connected her phone to the amplifier to play music at the party.
• The band’s sound system included several powerful amplifiers.
• He turned up the volume on his stereo amplifier.
• The microphone needs an amplifier to work properly.
• Social media can act as an amplifier for both good and bad news.
• The new amplifier improved the sound quality significantly.