A lavalier microphone is a small, portable microphone that clips onto a speaker’s clothing, either wired or wireless, and usually requiring an external power supply. They’re a common choice for TV interviews, stage performances, lectures, and presentations where voice amplification matters but space for a larger mic isn’t available.
This guide covers what a lavalier microphone is, how it works, its advantages and disadvantages, and how it compares to a lapel microphone.
Quick verdict: a lavalier mic is the right call for on-camera interviews, presentations, and stage work where hands-free, discreet audio matters most. It’s a poor fit for loud environments or situations needing tight, focused pickup from a distance.
What Is a Lavalier Microphone?
Lavalier microphones are small, portable microphones that clip to a speaker’s clothing. They can be wired or wireless and typically need an external power supply to operate.
There are two common types: the lapel microphone, clipped to a shirt, and the clip-on microphone, attached to a jacket collar or lapel. Lavaliers are widely used for TV interviews, stage performances, lectures, seminars, and other presentations where amplification is needed but space is limited.
How Does a Lavalier Microphone Work?
Lavalier microphones use a small plastic capsule that hangs from the speaker, similar in size to an earring. Inside that capsule sit two thin diaphragms, separated by a small gap, that vibrate in response to sound.
A battery powers a small circuit board hidden inside the capsule. This board amplifies the sound captured by the diaphragm’s vibrations, sending it to an external headphone or speaker setup for public address use. In a typical TV interview, the lavalier clips onto someone’s shirt via a lapel pin, then connects to a wireless transmitter that sends the signal to an audio mixer, which produces the final mix for broadcast.
Advantages and Disadvantages of a Lavalier Microphone
Advantages
- Delivers clear, presentable voice even in noisier environments
- Portable and easy to carry, since it clips onto clothing or a lapel
- Attaches easily to most standard cameras
- Lightweight and easy to handle
- More affordable than many other microphone types
- Available in different colors, such as black or red
- Compact and lightweight overall
- Useful across a wide range of occasions, including stage shows and TV interviews
If you specifically need a mic for sit-down style interviews rather than a clip-on, our guide to best microphones for interviews covers other strong options.
Disadvantages
- Doesn’t perform as well in genuinely loud environments
- Clipping it onto tight clothing can affect sound quality
- Wireless versions can run through batteries quickly, and may occasionally interfere with other nearby devices
- Batteries can be tricky to swap out in some models
- Tends to cost more than some comparable microphone types
History of the Lavalier Microphone
The first wired lavalier-style microphones trace back to Sony’s pioneering cardioid lav design in 1963. It wasn’t until the early 1980s, though, that the small lapel mic became a widely accepted tool in film and broadcast journalism, and later in live music venues.
Lavalier microphones have also played a role outside entertainment. They’ve been used by citizens to document interactions with law enforcement during protests and similar events, including widespread use during rallies in 2015.
Lavalier mics are also a staple in live theatre. The cabaret performer Bobby Short famously used one so audiences at his nightclub performances could better hear his quieter voice. Since then, lavalier mics have become a standard part of stage performances and theatre productions, helping audiences follow dialogue clearly. For broader options well suited to stage and presentation use, our guide to best wireless microphones for fitness instructors covers similar wireless technology in a different setting.
Lavalier Microphones vs Lapel Microphones
People sometimes use “lavalier” and “lapel microphone” interchangeably, but there’s a meaningful distinction between the two.
Lapel microphones are designed to capture the voice of the performer wearing them directly. Lavalier microphones, by contrast, are built to pick up sound more broadly, including from the sides or rear of a space, or even from behind an audience.
Lapel microphones work by capturing sound waves and converting them into an electrical signal through direct contact with a built-in capsule. That capsule contains diaphragms thinner than a human hair, which vibrate in response to changing air pressure caused by speech, then convert that vibration into an electrical signal for amplification.
Lavalier microphones, on the other hand, don’t have direct contact between the capsule and the mouth. Instead, they typically rely on a wireless receiver to convert the captured signal into sound.
Key Differences Between Lavalier and Lapel Microphones
There’s more than one difference between these two mic types, spanning use case, appearance, and design.
In terms of function, lavaliers capture sound from broader areas of a stage or room during a performance, while lapels focus specifically on capturing a single performer’s voice without their amplification drowning out others nearby.
In terms of size, lavalier mics tend to be smaller than lapel mics, since they don’t make direct contact with the mouth. Lapel mics are generally larger because of that direct contact requirement.
How each is worn differs too. Lapel mics clip onto a shirt or collar to capture voice directly from the wearer’s mouth. Lavaliers, as mentioned, avoid mouth contact entirely and instead rely on a wireless receiver to convert the captured signal into sound. Lavaliers also typically skip clips altogether in favor of tape for securing them to clothing, which makes them simple to wear.
Best Lavalier Microphones
If you’re shopping for a lavalier mic, look for one with a secure clip or mounting system, reliable battery life if it’s wireless, and compatibility with your camera or recording setup. For broader microphone options across different budgets, our guide to best microphones under $200 covers strong picks worth considering alongside a dedicated lavalier.
Conclusion
A lavalier microphone is a compact, hands-free solution well suited for interviews, presentations, and stage performances where space and discretion matter. It trades some performance in loud environments for portability and ease of use, making it a strong complement to other microphone types rather than a complete replacement.
If you’re setting up a full audio system around a lavalier mic, our guides on how to set up a wireless microphone system, what an audio interface is, and how AutoTune works cover related setup and production topics worth exploring next.
