LINE vs MIC Inputs: Understanding the Difference
LINE and MIC inputs serve different purposes in audio equipment:
- MIC inputs: Designed for low-level signals from microphones (-60 to -40 dBV)
- LINE inputs: Built for high-level signals from devices like phones, keyboards, or audio interfaces (+4 dBu or -10 dBV)
Can You Connect a Microphone to LINE Input?
Yes, but the signal will be extremely quiet and unusable without amplification. You'll need a preamp to boost the microphone signal to line level.
Can You Connect Line-Level Devices to MIC Input?
Yes, but the signal will be too hot and likely distort. Use a DI box (Direct Input) or attenuator to reduce the signal to microphone level.
Solutions for Mismatched Connections
For Microphones → LINE Input:
- Use a microphone preamp
- Use an audio interface with built-in preamps
For Line-Level → MIC Input:
- Use a DI box
- Use an inline attenuator pad
- Lower the output volume on the source device
Quick Reference
Input Type | Signal Level | Common Sources |
---|---|---|
MIC | -60 to -40 dBV | Microphones |
LINE | +4 dBu/-10 dBV | Phones, keyboards, mixers |
For best results, always match your device to the appropriate input type.