オーディオアンプ

noun

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.

• 新あたらしいオーディオアンプを買かったので、音おとが格かく段だんに良よくなった。

  I bought a new audio amplifier, so the sound quality improved dramatically.