folding amplifier

例句：

1. 1. This folding amplifier is compact and easy to use.
   这款折叠放大器体积小巧，易于使用。
2. 2. The folding amplifier is perfect for recording audio on the go.
   这款折叠放大器非常适合在旅途中录音。
3. 3. The folding amplifier is ideal for musicians who need to move around quickly.
   这款折叠放大器对于需要快速移动的音乐家来说非常理想。