noun
recording device; tape recorder; sound recorder
A device for recording audio; can refer to older tape-based recorders or modern digital recorders.
会議の内容を録音機で記録した。
I recorded the meeting content with a recording device.
昔はカセットの録音機を使っていた。
In the past, I used a cassette tape recorder.
録音 is the act of recording audio or the resulting recording, whereas 録音機 is the physical device used for recording.
Compound of 録音 (recording) and 機 (machine, device).