Miniature mono Cardioid (unidirectional) condenser lavaliere/instrument microphone.
The microphone is powered with normal “plug-in-power”, available on many portable recorders and camcorders. For use in high SPL (sound pressure level) situations, the microphones require additional power, beyond the normal “plug in power”. You will need to add battery module (power supply).
This is a professional miniature mono Cardioid (unidirectional) condenser lavaliere/instrument microphone with a flexible high quality shielded cable. The sound quality of this microphone far surpasses the built-in microphones on these devices. Available wired for most types of recording devices – computers, digital recorders, Smartphones, iOS devices, USB soundcards and more.
This clip-on lavalier mic provides crisp, full-sounding voice pickup. The AT831 also excels as an instrument mic, especially for pickup of acoustic guitar with the optional AT8444 guitar adapter. Excellent gain before feedback and suppression of background noise.
| SPECIFICATIONS | |
|---|---|
| ELEMENT | Fixed-charge back plate, permanently polarized condenser |
| POLAR PATTERN | Cardioid |
| FREQUENCY RESPONSE | 40-16,000 Hz |
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| OPEN CIRCUIT SENSITIVITY | -42 dB (7.9 mV) re 1V at Pa |
| IMPEDANCE | 250 ohms |
| MAXIMUM INPUT SOUND LEVEL | 110 dB SPL, kHz at 1% T.H.D. |
| DYNAMIC RANGE (typical) | 85 dB, kHz at Max SPL |
| SIGNAL-TO-NOISE RATIO | 65 dB, kHz at Pa |
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| WEIGHT (MICROPHONE) | 0.1 oz (2.8 g) |
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| DIMENSIONS (MICROPHONE) | 0.98″ (25.0 mm) long, 0.40″ (10.2 mm) diameter |
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| OUTPUT CONNECTOR | Select in option box |
| CABLE | Select length in option box – 3.2 mm (0.13″) diameter, 2-conductor, shielded cable |
| ACCESSORIES FURNISHED | Rotating Clothing clip; AT8116 windscreen |
| AUDIO-TECHNICA CASE STYLE | M1 |





Ryan S –
Great product. Very tight and controlled audio. Perfect for court reporters who work remote but are in an active household.
The microphone will only pick up your voice, not outside your window, your spouse walking in, kids screaming, tv going on, etc…
Everyone is always impressed by my audio. Pair this mic with a pair of noise cancelling headphones (I use Sony XM2s) and you’ll have a better setup than 98% of comparable products.
Elizabeth –
The mic I purchased works great!