What Is a Lavalier Microphone?

A lavalier microphone is a miniature clip-on microphone worn on a speaker's body to capture voice audio hands-free. Typically attached near the sternum, clipped to a lapel, hidden in hair, or taped under wardrobe, it delivers consistent dialogue to a mixer, camera, or recorder while giving presenters full freedom of movement. Lavs are the default choice across broadcast, film, theater, corporate events, and houses of worship anywhere a speaker needs to move and a sound team needs clean audio.

The capsule itself is usually a tiny condenser, roughly 3mm to 8mm in diameter, small enough to disappear under a collar or inside a tie knot. It connects either by wire to a mixer or recorder, or to a wireless bodypack transmitter that relays the audio to a receiver off-stage.

Common Names You'll Hear on Set

• Lav or lav mic
• Lapel mic
• Body mic
• Clip mic or clip-on mic
• Collar mic
• Neck mic
• Personal mic

Brief History of the Lavalier Mic

Lapel microphones date back to the 1930s, when engineers hung small mics from cords around a speaker's neck so they could operate Dictaphones, early broadcast equipment, or telephone switchboards without holding anything. The name "lavalier" traces back to Louise de la Vallière, a 17th-century figure in the court of Louis XIV who popularized pendant-style jewelry worn on the chest. Modern lavs are dramatically smaller, lighter, and better-sounding than their ancestors, but the concept has held steady for nearly a century.

How a Lavalier Microphone Works

A lavalier works by converting sound pressure at a small diaphragm into an electrical signal. That signal travels through a cable or wireless bodypack transmitter to a mixer, receiver, or recorder, where it is amplified and captured.

The signal chain depends on whether you're running wired or wireless:

• Wireless: capsule → bodypack preamp → RF transmitter → receiver → mixer or recorder
• Wired: capsule → cable → mixer input with phantom power

Condenser capsules dominate lav design because they're small, sensitive, and well-suited to capturing speech at close range. Dynamic elements are too large and too insensitive for the job. Most pro-grade lavs use electret condensers, which need a small amount of bias voltage to operate, typically 3V to 10V plug-in power from a bodypack or 48V phantom power from a mixer. Dynamic lavs exist but are rare, because condensers deliver the sensitivity and frequency response that speech capture demands.

Types of Lavalier Microphones

Lavalier microphones fall into a few main categories based on how they connect, how they pick up sound, and their physical size. Picking the right type comes down to the environment, the talent, and the signal chain you already own.

Wired vs. Wireless Lavalier Microphones

Wired lavs connect directly to a mixer or recorder. Wireless lavs plug into a bodypack that transmits on a radio frequency to a receiver. Here's how they compare:

Polar Patterns: Omnidirectional vs. Cardioid

Omnidirectional lavs pick up sound evenly from every direction. They sound more natural, tolerate head movement well, and tend to handle clothing rustle better than directional mics. Most film, broadcast, and controlled-studio work uses omni patterns.

Cardioid lavs reject sound coming from the sides and rear, which reduces feedback risk on noisy stages or in rooms with monitors near the talent. Corporate events with floor wedges, houses of worship with in-ear monitor bleed, and live theater with loud orchestras often benefit from cardioid pickup.

Standard vs. Subminiature Capsules

Standard lavs sit around 5mm and are the easiest to handle. Subminiature models like the Shure TwinPlex TL46 or DPA 6060 shrink the capsule to 3mm or less, which is what most theater productions, high-end TV sets, and network broadcasts use when the mic needs to disappear completely on camera.

Connector Types Every Pro Should Know

Lavalier capsules terminate in different connectors depending on the manufacturer they're built for. Matching the connector to your wireless bodypack or mixer input is the single most overlooked step when buying a replacement mic. Here's a quick-reference table of the common options.

Lavalier Microphone Setup: Step-by-Step

A proper lavalier setup has three stages: assembling the right gear, connecting and configuring the signal chain, and placing the capsule on the talent for clean capture. Here's the process pros follow.

What You Need for a Complete Setup

• Lavalier microphone capsule with the correct connector
• Bodypack wireless transmitters and receivers (for wireless rigs)
• Fresh alkaline or fully charged rechargeable batteries
• Lightweight clip, vampire clip, or hidden mount hardware
• Foam windscreen for outdoor use
• Moleskin, Hush Lav covers, or sticky triangles for concealment
• XLR or 3.5mm output cable to the mixer, camera, or recorder

If you're building a full wireless rig from scratch, AVGear's wireless microphone systems collection carries tested pre-owned and B-stock packages from Shure, Sennheiser, and Lectrosonics.

Setup Workflow for Wireless Lavalier Rigs

Follow this sequence for a repeatable wireless setup:

1. Run an RF scan on the receiver to find clean frequencies in your area.
2. Set matching frequencies on the transmitter and receiver and confirm the RF lock indicator.
3. Connect the capsule to the bodypack using the correct connector.
4. Clip the tiny mic to the talent's clothing about 6 to 8 inches below the chin.
5. Orient the capsule upward toward the mouth and run a voice check.
6. Set gain at the transmitter first, then the receiver, then the mixer for unity gain through the chain.
7. Monitor the sound quality in headphones for rustle, RF dropouts, and clipping before going live.

Setup Workflow for Wired Lavaliers

Wired setups are simpler. Connect the capsule to an XLR or 3.5mm input, apply the correct power, and check levels. Pay attention to the power spec on the mic: some condenser lavs run on 48V phantom power, while others use low-voltage plug-in power between 3 and 10 volts. Sending 48V to a mic that expects plug-in power can damage the capsule.

Lavalier Placement: Getting Clean Audio Quality

Placement is where most lavalier audio problems start. A technically perfect mic clipped in the wrong spot will sound muddy, thin, or buried under clothing noise. The target is a consistent distance from the mouth, a clear line of sight for the capsule, and a mount that isolates the mic from clothing movement. Here's how to achieve high-quality sound by application.

Standard Clip-On Placement

For corporate events, interviews, and broadcast work, clip the mic to the speaker's tie, lapel, collar, or shirt placket roughly 6 to 8 inches below their chin. Orient the capsule toward the mouth. That distance balances proximity (for a strong signal) against plosive risk (for popped P's and B's). If the talent's head turns significantly to one side, omnidirectional capsules will hold up much better than cardioids. Keep the cable hidden behind clothing with a small service loop to absorb movement.

Hidden Placement for Film and Theater

Film and narrative TV work almost always hides the lav under wardrobe. The standard method is a moleskin sandwich: a small square of moleskin on the skin, the capsule resting on top with its face exposed, and another moleskin square covering the body of the capsule (but not the front). Tape the whole assembly down with medical tape. Theater productions, especially musicals, often run the mic into the hairline at the forehead or temple, which puts the capsule close to the mouth without any clothing contact.

How to Avoid Clothing Rustle

Clothing rustle is the most common lav problem on location. Reduce it by:

• Use triangle mounts or Hush Lav covers to isolate the capsule from fabric
• Route the cable in a small service loop so it can move without pulling on the capsule
• Avoid silk, polyester, and layered synthetic fabrics when possible
• For high-stakes shots, record a boom mic simultaneously as a backup

Where Lavalier Microphones Are Used in Professional Settings

Lavalier microphones appear almost anywhere a speaker needs to move freely while a sound team captures clean dialogue. The specific use cases break down into a handful of categories, and each one has its own placement preferences, gear standards, and trade-offs around visibility and audio fidelity.

• Broadcast and news: hands-free interviews, anchor desks, and field reporting where reporters need to stay mobile on location.
• Film and television: hidden mics taped under wardrobe to capture natural dialogue without breaking the shot.
• Theater: headworn microphones mounted in hair or on the forehead for musicals, plays, and opera performances.
• Corporate events: keynotes, panel discussions, and breakout sessions where presenters work a stage or room.
• Houses of worship: pastors, worship leaders, and drama ministry performers who need discreet amplification.
• Education: lecture capture, classroom recording, and online course production for hybrid and remote learning.
• Live events: TED-style talks, moderated panels, and award shows with multiple mic'd speakers on stage.
• Content creators: the go-to for YouTubers, podcasters, and social video producers who need cleaner audio recording than a smartphone's built-in mic can deliver.
• Fitness instructors: spin, HIIT, and yoga teachers rely on sweat-resistant lavs to cut through loud music and stay audible across the room while moving constantly.

Top Professional Lavalier Microphone Brands

The secondary market is deep in lavalier inventory, and knowing which brands hold their value helps you budget smarter. These are the manufacturers worth knowing when you're shopping:

• Shure: dominates corporate and house of worship work with the WL185, WL93, and SM83, plus the higher-end TwinPlex TL45, TL46, TL47, and TL48 series.
• Sennheiser: the ME 2, MKE 2, and XS Lav are staples in broadcast and event production.
• Countryman: the B3 and B6 omnis are go-to picks for theater and film, prized for their tiny profile and reliability.
• DPA: the 4060, 4061, and 6060 subminiature mics set the standard for high-end TV, Broadway, and opera.
• Audio-Technica: the AT829 and AT831 round out the mid-tier for general pro use.
• Lectrosonics: the M152 and M119 are the reference picks for documentary and narrative film sound.

You can browse tested, pre-owned lavaliers from these brands in AVGear's wired microphones collection and full wireless systems catalog.

Should You Buy a New or Used Lavalier Microphone?

A well-made lavalier can run for 10 to 15 years of professional service with proper care, which makes the used market a smart place to shop. Pre-owned pro-grade lavs often sell at 40 to 60 percent below MSRP, and the technology curve on lavalier capsules is slow enough that a five-year-old DPA or Countryman performs the same today as it did new.

What matters is buying from a seller who tests and rates every unit. AVGear runs every microphone through functionality and cosmetic grading in its Las Vegas warehouse, with a limited warranty on used inventory and a clear condition scale on every product page.

Buy, Sell, or Trade Lavalier Microphones With AVGear

AVGear is a one-stop shop for pro AV gear, and that includes lavaliers and the wireless systems they run on.

If you're buying: browse tested pre-owned and B-stock inventory from Shure, Sennheiser, Countryman, DPA, Audio-Technica, and Lectrosonics across wired microphones and wireless microphone systems. Every piece goes through full QC before it ships.

If you're selling: retired lavs, surplus bodypacks, or a full production rig sitting in storage have real resale value. AVGear handles quoting, pickup, testing, listing, and payout end to end, so you reclaim your space without burning staff time on a sale you don't want to run yourself. Start the process on the Sell Your Gear page or call 877-AVGEAR1 to talk through a quote.

AVGear has spent more than a decade buying and reselling pro AV gear, with a buyer network built around production companies, venues, studios, and houses of worship nationwide.