Amplifier vs. Bullhorn — What's the Difference?

An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the power of a signal (a time-varying voltage or current). It is a two-port electronic circuit that uses electric power from a power supply to increase the amplitude of a signal applied to its input terminals, producing a proportionally greater amplitude signal at its output.

A portable device consisting of a microphone attached to a loudspeaker, used especially to amplify the voice.

One that amplifies, enlarges, or extends.

A megaphone which electronically amplifies a person’s natural voice.

An electronic device that is used to increase the magnitude of an electrical signal.

A portable loudspeaker with built-in microphone and amplifier.

A device that is used to increase the magnitude of an information-carrying signal.

A portable loudspeaker with built-in microphone and amplifier

Anything that amplifies, or makes something larger or more intense.

(linguistics) An adverb that adds intensity, such as "really" or "totally".

(electronics) An appliance or circuit that increases the strength of a weak electrical signal without changing the other characteristics of the signal.

(music) A portable encasement that houses a large speaker, used to amplify voices and musical instruments at live performances.

A lens that enlarges the field of vision.

One who or that which amplifies.

Electronic equipment that increases strength of signals passing through it