What is a Mic Check?

A mic check is a quick test of a single microphone, made by speaking into it before a show or presentation, to confirm it works, sounds clear and is at the right level. It is where the familiar "check, one, two" comes from.

How to do a mic check

A mic check usually takes less than a minute per microphone:

  1. Speak naturally: the speaker or technician talks at normal volume and distance, not tapping or blowing into it.
  2. Set the level: the sound engineer sets the input level so the voice is clear without distorting.
  3. Check the sound: they listen for hum, crackles, popping or a dull tone.
  4. Check monitors: if the speaker uses a monitor, they confirm they can hear themselves.
  5. Check radio mics: wireless mics get fresh batteries and are walked around the stage to check for dropouts.

At conferences and awards, mic checks for each speaker are built into the rehearsal schedule. Many teams plan those slots on an event timeline in Crescat.

Mic check vs line check vs sound check

A mic check tests one microphone. A line check tests every input on stage, one by one. A sound check is a full rehearsal where the band plays together and the engineers set the whole mix.

Mic check checklist for presenters

  • Fresh batteries in every radio mic
  • Lapel mics clipped mid-chest, away from jewellery and clothing noise
  • Headset mics positioned at the corner of the mouth
  • A test walk across the stage for wireless dropouts
  • A spare handheld mic ready on stage

Frequently asked questions

Why do people say "one, two" in a mic check?

It's a short, familiar phrase that is easy to repeat, and the sounds in it help engineers hear the clarity of the voice. Many engineers prefer people to speak naturally, as if presenting, instead.

How long before an event should you do a mic check?

Do it during rehearsal or sound check, usually an hour or more before doors, with a quick final check just before the audience arrives. That leaves time to replace faulty mics.

Should you tap a microphone to test it?

No. Tapping or blowing into a microphone can damage it and doesn't show how a voice will sound. Speaking at normal volume is the best test.

Related terms