Product description & specifications
Audio-Technica AT831 Miniature Cardioid Condenser Microphone This clip-on lavalier mic provides crisp, full-sounding voice pickup. The AT831R also excels as an instrument mic, especi... Read moreRead less⌄
Audio-Technica AT831 Miniature Cardioid Condenser Microphone
This clip-on lavalier mic provides crisp, full-sounding voice pickup. The AT831R also excels as an instrument mic, especially for pickup of acoustic guitar with included AT8444 guitar adapter. The mic is ideal for higher SPL applications. Excellent gain before feedback and suppression of background noise. Operates on phantom power only.
Features:
- Clip-on lavalier mic also excels in acoustic guitar applications
- Provides crisp, full-sounding voice and instrument pickup
- Excellent gain before feedback and suppression of background noise
- Operates on phantom power only
- 4.0 m (13.1') cable permanently attached to mic, TA3F connector at power module
- RoHS compliant—free from all substances specified in the EU directive on hazardous substances
Specifications:
- ELEMENT: Fixed-charge back plate, permanently polarized condenser
- POLAR PATTERN: Cardioid
- FREQUENCY RESPONSE: 40-16,000 Hz
- LOW FREQUENCY ROLL-OFF: 80 Hz, 18 dB/octave
- OPEN CIRCUIT SENSITIVITY: -42 dB (7.9 mV) re 1V at 1 Pa
- IMPEDANCE: 250 ohms
- MAXIMUM INPUT SOUND LEVEL: 141 dB SPL, 1 kHz at 1% T.H.D.
- DYNAMIC RANGE (typical): 112 dB, 1 kHz at Max SPL
- SIGNAL-TO-NOISE RATIO: 65 dB, 1 kHz at 1 Pa
- PHANTOM POWER REQUIREMENTS: 11-52V DC, 2 mA typical
- SWITCH: Flat, roll-off
- WEIGHT (MICROPHONE): 0.1 oz (2.8 g)
- WEIGHT (POWER MODULE): 2.9 oz (81 g)
- DIMENSIONS (MICROPHONE): 0.98" (25.0 mm) long, 0.40" (10.2 mm) diameter
- DIMENSIONS (POWER MODULE): 3.66" (92.9 mm) long, 0.74" (18.9 mm) diameter
- OUTPUT CONNECTOR (POWER MODULE): Integral 3-pin XLRM-type
- CABLE: 4.0 m (13.1') long (permanently attached to microphone), 3.2 mm (0.13") diameter, 2-conductor, shielded cable with TA3F-type connector
- ACCESSORIES FURNISHED: AT8417 clothing clip; AT8444 guitar adapter; AT8538 remote power module; AT8116 windscreen; protective carrying case
- AUDIO-TECHNICA CASE STYLE: M1
Audio Technica
Audio-Technica AT831 Microphone — New
Audio-Technica AT831 Microphone — New
Product description & specifications
Audio-Technica AT831 Miniature Cardioid Condenser Microphone This clip-on lavalier mic provides crisp, full-sounding voice pickup. The AT831R also excels as an instrument mic, especi... Read moreRead less⌄
Audio-Technica AT831 Miniature Cardioid Condenser Microphone
This clip-on lavalier mic provides crisp, full-sounding voice pickup. The AT831R also excels as an instrument mic, especially for pickup of acoustic guitar with included AT8444 guitar adapter. The mic is ideal for higher SPL applications. Excellent gain before feedback and suppression of background noise. Operates on phantom power only.
Features:
- Clip-on lavalier mic also excels in acoustic guitar applications
- Provides crisp, full-sounding voice and instrument pickup
- Excellent gain before feedback and suppression of background noise
- Operates on phantom power only
- 4.0 m (13.1') cable permanently attached to mic, TA3F connector at power module
- RoHS compliant—free from all substances specified in the EU directive on hazardous substances
Specifications:
- ELEMENT: Fixed-charge back plate, permanently polarized condenser
- POLAR PATTERN: Cardioid
- FREQUENCY RESPONSE: 40-16,000 Hz
- LOW FREQUENCY ROLL-OFF: 80 Hz, 18 dB/octave
- OPEN CIRCUIT SENSITIVITY: -42 dB (7.9 mV) re 1V at 1 Pa
- IMPEDANCE: 250 ohms
- MAXIMUM INPUT SOUND LEVEL: 141 dB SPL, 1 kHz at 1% T.H.D.
- DYNAMIC RANGE (typical): 112 dB, 1 kHz at Max SPL
- SIGNAL-TO-NOISE RATIO: 65 dB, 1 kHz at 1 Pa
- PHANTOM POWER REQUIREMENTS: 11-52V DC, 2 mA typical
- SWITCH: Flat, roll-off
- WEIGHT (MICROPHONE): 0.1 oz (2.8 g)
- WEIGHT (POWER MODULE): 2.9 oz (81 g)
- DIMENSIONS (MICROPHONE): 0.98" (25.0 mm) long, 0.40" (10.2 mm) diameter
- DIMENSIONS (POWER MODULE): 3.66" (92.9 mm) long, 0.74" (18.9 mm) diameter
- OUTPUT CONNECTOR (POWER MODULE): Integral 3-pin XLRM-type
- CABLE: 4.0 m (13.1') long (permanently attached to microphone), 3.2 mm (0.13") diameter, 2-conductor, shielded cable with TA3F-type connector
- ACCESSORIES FURNISHED: AT8417 clothing clip; AT8444 guitar adapter; AT8538 remote power module; AT8116 windscreen; protective carrying case
- AUDIO-TECHNICA CASE STYLE: M1
- ✓Audio-Technica AT831 Miniature Cardioid Condenser Microphone This clip-on lavalier mic provides crisp, full-sounding voice pickup.
- ✓The AT831R also excels as an instrument mic, especially for pickup of acoustic guitar with included AT8444 guitar adapter.
- ✓The mic is ideal for higher SPL applications.
Key specifications.
- Manufacturer
- Audio Technica
- Product reference
- AT831R
- Equipment type
- Lavalier Mics
- Technical overview
- Audio-Technica AT831 Miniature Cardioid Condenser Microphone This clip-on lavalier mic provides crisp, full-sounding voice pickup. The AT831R also excels as an instrument mic, especially ...

Good questions.
Clear answers.
Everything you need to shop confidently, without digging through the fine print.
Talk to our team ↗ SUPPORT / 01—04