Audio-Technica AT803 Omnidirectional condenser lavalier microphone is backordered and will ship as soon as it is back in stock.
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Product Overview
The Audio-Technica AT803 is a miniature omnidirectional condenser lavalier microphone supplied with a power module, built for presenters, lecturers, and interview subjects. Its omnidirectional pattern captures natural speech with consistent level as the talker moves, making it a dependable lavalier microphone for conference rooms, houses of worship, and broadcast. It runs on either an AA battery or 11–52V phantom power.
Product Description
Clipped to a lapel, the AT803 delivers clear, natural speech for sound reinforcement, lecture capture, and interviews. Its omnidirectional pattern is forgiving of placement and keeps level consistent during movement.

Frequency response runs 30–20,000 Hz, and the microphone handles up to 135 dB SPL on phantom power (121 dB on battery) with a 107 dB dynamic range. A UniSteep filter provides steep low-frequency attenuation to improve pickup without affecting voice quality. The included power module accepts battery or phantom power.
For a cardioid lavalier that rejects more off-axis sound, the AT831R is a companion option.
Key Features
- Omnidirectional lavalier capsule — A natural, open pattern keeps level consistent as the presenter moves and is forgiving of placement.
- Battery or phantom power — The included power module runs on an AA battery or 11–52V phantom power for flexible deployment.
- UniSteep filter — Steep low-frequency attenuation improves pickup without affecting voice quality.
- Discreet clip-on form — The miniature lavalier mounts unobtrusively on a lapel for presentations and broadcast.
- Wide frequency response — A 30–20,000 Hz response captures natural speech and program audio.
Technical Specifications
| Type | Condenser (lavalier) with power module |
|---|---|
| Polar pattern | Omnidirectional |
| Frequency response | 30–20,000 Hz |
| Maximum input SPL | 135 dB SPL (phantom) / 121 dB SPL (battery) |
| Dynamic range | 107 dB (phantom) / 93 dB (battery) |
| High-pass filter | UniSteep low-frequency attenuation |
| Power | 1.5V AA battery or 11–52V phantom |
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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