An input socket in an electrical device.
More example sentences
- The line-in even has a sensor to automatically break tracks after a sufficient length of silence.
- I could record analog audio through either a microphone input or line-in jack, and I even could listen to MIDI music files played by the soundchip synth.
- I am particularly keen to know how it is able to discern how the unit's analogue audio output is not connected to any kind of recording apparatus - such as a tape recorder, or the line-in connection of a sound card?