AT831b

Cardioid Condenser Lavalier Microphone

MSRP* US$199.00
Five-Year Limited End-User Warranty

*Manufacturer's Suggested Retail Price. Actual selling price may vary; please check with an authorized Audio-Technica dealer.



  • Overview
  • Features
  • Specifications
  • Downloads
  • Reviews
  • Q & A

  • Overview


    This clip-on lavalier mic provides crisp, full-sounding voice pickup and excels as an instrument mic, especially for pickup of acoustic guitar with included AT8444 guitar adapter. It offers excellent gain before feedback and suppression of background noise. An integral 80 Hz high-pass filter provides easy switching from a flat frequency response to a low-end roll-off. It operates on battery or phantom power.

  • Features


    • Clip-on lavalier mic also excels in acoustic guitar applications

    • Provides crisp, full-sounding voice and instrument pickup

    • Operates on battery or phantom power

    • 6' (1.8 m) cable permanently attached to mic, TA3F connector at power module

    • Also available as:
      AT831R – with phantom-only power module
      AT831c – less power module; includes clothing clip and windscreen only; 10' (3 m) cable, unterminated
      AT831cW – less power module; includes clothing clip and windscreen only; 55" (1.4 m) cable terminated with locking 4-pin connector for A-T UniPak® wireless systems
      AT831cT5 – less power module; includes clothing clip and windscreen only; 55" (1.4 m) cable terminated with TA5F connector

  • Specifications

    ELEMENTFixed-charge back plate, permanently polarized condenser
    POLAR PATTERNCardioid
    FREQUENCY RESPONSE40-18,000 Hz
    LOW FREQUENCY ROLL-OFF80 Hz, 18 dB/octave
    OPEN CIRCUIT SENSITIVITYPhantom: -44 dB (6.3 mV) re 1V at 1 Pa
    Battery: -46 dB (5.0 mV) re 1V at 1 Pa
    IMPEDANCEPhantom: 200 ohms
    Battery: 270 ohms
    MAXIMUM INPUT SOUND LEVELPhantom: 135 dB SPL, 1 kHz at 1% T.H.D.
    Battery: 121 dB SPL, 1 kHz at 1% T.H.D.
    DYNAMIC RANGE (typical)Phantom: 106 dB, 1 kHz at Max SPL
    Battery: 92 dB, 1 kHz at Max SPL
    SIGNAL-TO-NOISE RATIO65 dB, 1 kHz at 1 Pa
    PHANTOM POWER REQUIREMENTS11-52V DC, 2 mA typical
    BATTERY TYPE1.5V AA/UM3
    BATTERY CURRENT / LIFE0.4 mA / 1200 hours typical (alkaline)
    SWITCHOff, on-flat, on-roll-off
    WEIGHT (MICROPHONE)0.1 oz (2.8 g)
    WEIGHT (POWER MODULE)4.9 oz (139 g)
    DIMENSIONS (MICROPHONE)0.98" (25.0 mm) long,
    0.40" (10.2 mm) diameter
    DIMENSIONS (POWER MODULE)3.31" (84.0 mm) H x
    2.48" (63.0 mm) W x
    0.87" (22.0 mm) D
    OUTPUT CONNECTOR (POWER MODULE)Integral 3-pin XLRM-type
    CABLE6' (1.8 m) long (permanently attached to microphone), 0.10" (2.6 mm) diameter, 2-conductor, shielded cable with TA3F-type connector
    ACCESSORIES FURNISHEDClothing clip; AT8444 instrument adapter; AT8531 power module; AT8116 windscreen; battery; protective carrying case
    AUDIO-TECHNICA CASE STYLEM1
    Click on the chart to view the larger image
    POLAR PATTERN
    POLAR PATTERN
    FREQUENCY RESPONSE
    FREQUENCY RESPONSE



    Conditions
  • Downloads

    AT831b Specification Sheet (pdf 99.14 KB)
    AT831b Submittal Sheet (pdf 369.15 KB)
    Optional Windscreens / Mounts
  • Reviews

    REVIEW SNAPSHOT®

    by PowerReviews
    Audio-TechnicaAT831b Cardioid Condenser Lavalier Microphone
     
    4.3

    (based on 3 reviews)

    Ratings Distribution

    • 5 Stars

       

      (1)

    • 4 Stars

       

      (2)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    Pros

    No Pros

    Cons

    No Cons

    Best Uses

    No Best Uses
      • Reliability:
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    Reviewed by 3 customers

    Displaying reviews 1-3

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    5.0

    AT831(Cw)

    By 

    from North Hills

    Pros

    • Clear Sound
    • Compact
    • Durable
    • Easy To Use
    • Lightweight
    • Versatile

    Cons

      Best Uses

        Comments about Audio-Technica AT831b Cardioid Condenser Lavalier Microphone:

        I selected this mic to use with the System 10 Pro , just purchased.
        Sound for a Presenter ! Very, very Good - Excellent !

        • What best describes the environment the product was used in?:
        • Live Sound
        • What best describes your level of audio knowledge?:
        • Intermediate
        • How long have you used this product?:
        • Less than a month
        • Reliability:
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        •  
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        (0 of 1 customers found this review helpful)

         
        4.0

        This product has great features

        By 

        from Budapest, Hungary

        Site Member

        Pros

        • Other

        Cons

          Best Uses

            Comments about Audio-Technica AT831b Cardioid Condenser Lavalier Microphone:

            Pros: veil-free sound, good space imaging
            Cons: slight high-pitched voice absence and few glitter.
            Good value for money.

            • What best describes the environment the product was used in?:
            • Novice
            • What best describes your level of audio knowledge?:
            • Live Sound
            • How long have you used this product?:
            • Over a year
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            4.0

            Good microphone but could use more mounting options

            By 

            from S. E. Pennsylvania

            Site Member

            Pros

            • Instrument

            Cons

              Best Uses

                Comments about Audio-Technica AT831b Cardioid Condenser Lavalier Microphone:

                I bought this microphone to use on acoustic guitar. The included sound hole mount works and the adjustment allows for some limited tonal adjustments. Audio-Technica should consider offering additional instrument mounts for this quality microphone such as the 4099G mount offered by DPA that positions the microphone over the fretboard of the guitar for more natural sound. I prototyped an alternative such mount and the results are encouraging.

                • What best describes the environment the product was used in?:
                • Intermediate
                • What best describes your level of audio knowledge?:
                • Studio
                • How long have you used this product?:
                • Up to a year
                • Reliability:
                •  
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                •  
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                Displaying reviews 1-3

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              • Q & A

                Do you have questions about this product?

                Get answers from real customers and in-house experts with AnswerBox.

                18 Questions | 18 Answers
                Displaying questions 1-10Previous | Next »
                • Q:

                  I have no experience with microphones. How do I get this to work? Where does the sound go to?
                  Asked on 6/21/2016 by Baffled Brittany from NJ

                  1 answer

                  • Staff Reviewer

                    A:

                    For technical support, please contact the Audio-Technica United States (ATUS) Audio Solutions Team at: audio-solutions@atus.com

                    Answered on 6/23/2016 by ATUS_Specialist4
                • Q:

                  Hello - I need to connect this microphone to a camcorder that uses an xlr connection. Please confirm what is the best cable to make that connection.

                  Thank you.

                  Emilio
                  Asked on 5/19/2016 by Emilio from Chicago,USA

                  1 answer

                  • CUSTOMER CARE

                    A:

                    The AT831b comes with the AT8531 Power Module, which is a necessary component. That power module has an XLR output. To connect to an XLR camcorder, you would need both the AT8531 and a standard XLR cable like the AT8314.

                    If you have any further questions, please contact the Audio-Technica United States (ATUS) Audio Solutions Team at:
                    audio-solutions@atus.com

                    Thanks!

                    Answered on 5/27/2016 by Anonymous
                • Q:

                  I lost the mic "sock" (cover) for a similar model (AT831a). Is there a way to purchase a new sock for this and am I correct to assume this model's sock will also fit mine?
                  Asked on 1/28/2016 by Michael from United States

                  1 answer

                  • CUSTOMER CARE

                    A:

                    To receive an answer to your question, please contact the Audio-Technica United States (ATUS) Audio Solutions Team at:
                    audio-solutions@atus.com

                    For your particular inquiry, please include a picture of the microphone.

                    Thanks!

                    Answered on 1/28/2016 by ATUS_Specialist2 from Stow, OH
                • Q:

                  can I use this mic with a audio-technical wireless belt clip
                  Asked on 10/22/2015 by jeff

                  1 answer

                • Q:

                  Hello,
                  I need the little clip at the end of the clip for guitar sound hole, a little plastic oarlock of a thing. How can I get just that?

                  Thank you.
                  Paul Clements
                  Asked on 9/22/2015 by Pablo

                  1 answer

                • Q:

                  Is it possible to just purchase the mic and cable on T3?

                  Great mic. Is it possible to just purchase the mic and cable terminated to the T3 connector? I have quite a few ones that are staring to buzz, due to a strained cable. The power module is stiil like new, would just need to replace the rest.
                  Asked on 5/27/2015 by GuyP from Ottawa, ON, Canada

                  1 answer

                  • A:

                    Please contact our Audio Solutions Department at (330) 686-2600 ext 5000 or at audio-solutions@atus.com for assistance with this.

                    Answered on 5/29/2015 by AudioSolutionsSpec3
                • Q:

                  Is this mic comparable to and interchangeable with, the 831?

                  Client has a bad 831 and did search for replacement. He came up with "b" & "c" models.

                  Does this mic come with same connector as the 831?
                  Asked on 5/14/2015 by Dred from Albany NY

                  1 answer

                  • A:

                    Please contact our Audio Solutions Department at (330) 686-2600 ext 5000 or at audio-solutions@atus.com for assistance with this.

                    Answered on 5/27/2015 by AudioSolutionsSpec3
                • Q:

                  Is this mic compatible with the Sennheiser g3 bodypack?
                  Asked on 2/11/2015 by Wiggins7 from Arlington, WA, USA

                  1 answer

                  • A:

                    No, it is not. The AT831b is the wired version of the mic. We do offer it as a special order at an additional charge however. Order the AT831c, which is unterminated, through your local authorized a-t dealer and request a special build order for Sennheiser termination.
                    Please note that we DO offer another lav mic model, the BP896cLM3 (black) or BP896cLM3-TH (beige), for use with g3 transmitters.

                    Answered on 2/12/2015 by AudioSolutionsSpec1 from Stow,OH
                • Q:

                  Only for guitar or also for voice?

                  Just to ask if this mic is for instrument use (guitar) or if I can use it also to record voice.

                  Thanks!
                  Asked on 10/15/2014 by mrcmrc

                  1 answer

                  • A:

                    Yes, it can be used for voice as well. In fact, it is one of our most popular models for spoken word applications.

                    Answered on 10/20/2014 by AudioSolutionsSpec1 from Stow,OH
                • Q:

                  Gooseneck Equivalent

                  I have one of these mics and love the quality. I would like to get the equivalent mic in a gooseneck style. Can you give me the equivalent model number(s)?
                  Asked on 12/3/2013 by Streamline from Canada

                  1 answer

                  • A:

                    The equivalent will be the U857. However, there are many versions of the U857 that have different lengths and connections, for proper integration into your existing audio system. Please visit www.audio-technica.com to review all versions of the U857. If you have any further questions regarding the U857 and which version would work best for you, please contact audio-solutions@atus.com .

                    Thanks!

                    Answered on 12/12/2013 by AudioSolutionsSpec2 from Stow, OH
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