audio amplifier; audio amp
Refers to an electronic device that amplifies audio signals, commonly used in home audio systems, musical instruments, and professional sound equipment.
新しいオーディオアンプを買ったので、音が格段に良くなった。
I bought a new audio amplifier, so the sound quality improved dramatically.
Variant with interpunct; less common in running text but seen in product names or technical writing.
Loanword from English 'audio amp' or 'audio amplifier'.