Translation guide
An amplifier is a device that increases the power of a signal, especially for audio. In Japanese, the most common term is アンプ (anpu), a loanword from English. There are also more specific technical terms.
amplifier (general)
A device that amplifies audio signals, such as for musical instruments, home stereos, or public address systems.
The most common and versatile term for an amplifier, borrowed from English. Used in everyday conversation for audio equipment.
I bought a guitar amplifier.
This amplifier sounds good.
A more formal or technical term for an amplifier. Often used in engineering contexts.
This amplifier supports high frequencies.
Specifically a power amplifier, which drives speakers. Often used in hi-fi or professional audio.
A preamplifier that boosts weak signals before the main amplifier.
Standard term for preamplifier, used in audio and recording.
A microphone needs a preamplifier.
An amplifier specifically for musical instruments like guitar or bass.
An amplifier for any electronic signal, not just audio. Used in circuits, radio, etc.
Even in electronics, アンプ is widely understood. Context clarifies the type.
This circuit uses an operational amplifier.
Technical term for any signal amplifier.
Specifically 'amplifier circuit', used in electronics design.
This amplifier circuit is low-noise.
In everyday conversation, アンプ is perfectly natural and understood. 増幅器 sounds more technical and is often seen in written specifications or formal documents. For most learners, アンプ is the go-to word.
The main amplifier broke down.
Adjust the gain of the amplifier.