amplifier kit

例句：

1. 1. The engineer used an amplifier to boost the signal strength.
   工程师使用一个放大器来增强信号强度。
2. 2.The audiophile loves to use high-quality amplifiers to enhance their listening experience.
   发烧友喜欢使用高质量的放大器来提升他们的听音体验。
3. 3.The speaker system needs an amplifier to provide enough power for the speakers.
   扬声器系统需要放大器提供足够的功率给扬声器。