Microphone · Display & Sound

Set input level so your voice is clear without clipping or being too quiet

Gain (sometimes labeled sensitivity or trim) controls how much the microphone's signal is amplified before it reaches your computer or recording software. Too low and your voice sounds distant or gets buried under background noise processing; too high and it distorts or "clips" during louder moments.

What you should know

  • Set gain at the source first: turn the physical gain knob on the microphone or audio interface while speaking at your normal volume, aiming for peaks around -12 dB to -6 dB on the app's level meter, never touching 0 dB (red/clipping).
  • Windows: Settings → System → Sound → Input → device Properties → Volume, as a secondary software-level adjustment on top of hardware gain.
  • macOS: System Settings → Sound → Input, adjust the Input Volume slider while watching the level meter respond as you speak.
  • Say a few sentences at the loudest volume you'll realistically reach (including laughs or excited moments) while setting gain, not just your resting speaking voice.
  • If your voice sounds distorted or crackly even at moderate levels, lower hardware gain first before adjusting anything downstream — software gain can't fix clipping that already happened at the microphone.

Clipping (audio distortion from too much gain) is baked into the recording and cannot be fixed afterward — always leave headroom rather than pushing levels as high as possible.

Why it matters

Gain is the single setting with the biggest effect on perceived audio quality in calls, streams, and recordings — a well-set gain sounds clean and professional, while a poorly set one sounds either muffled and hard to hear or harsh and distorted, and no amount of noise suppression or EQ fully compensates for getting it wrong at the source.

Best practices

  • Re-check gain any time you change rooms, move the microphone's position, or switch to a different microphone, since the right level is specific to distance and environment.
  • Leave a few dB of headroom below clipping rather than maximizing loudness — post-processing and playback volume can always boost a slightly quiet recording, but they can't undo distortion.
  • If your microphone or interface has both a hardware gain knob and an OS-level input volume slider, set hardware gain first and use the OS slider only for minor fine-tuning.

Common problems and fixes

Voice sounds distorted, crackly, or "fuzzy" during louder moments
Lower the hardware gain knob on the microphone or interface — this is almost always clipping caused by too much input gain, not a software issue.
Others say you sound quiet even at max volume on their end
Increase gain at the source (hardware knob) rather than just raising OS input volume, and move slightly closer to the microphone if it has a wide working distance.

Tips and tricks

  • Many conferencing apps have an automatic gain/volume feature that can fight with a properly set manual gain — if levels seem to drift or pump up and down on their own, look for an "automatic" or "auto-adjust microphone level" toggle to disable in that app's settings.

Frequently asked questions

What's the difference between gain and volume?

Gain amplifies the raw signal at or near the microphone itself, before any digital processing; volume (as an OS-level slider) adjusts the signal after it's already been captured, so a bad gain setting can't be fully corrected by adjusting volume alone.