Subminiature Omnidirectional Condenser Lavalier Microphone

MSRP* US$269.00
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

    Audio-Technica’s omnidirectional AT899 is engineered for intelligible, accurate voice reproduction. Its low-profile design (a mere 5 mm in diameter) assures minimum visibility. The mic may be worn as a lavalier and is easily hidden in clothing or hair. It offers the convenience of battery or phantom power; its switchable low-frequency roll-off reduces popping.
  • Features

    • Maximum intelligibility and clean, accurate reproduction for vocalists, lecturers, stage and television talent, and houses of worship

    • Low-profile design (a mere 5 mm in diameter) is ideal for applications requiring minimum visibility

    • Operates on battery or phantom power

    • All wireless models available in either low-reflectance black or beige

    • Extensive array of provided accessories includes a clothing clip, viper clip, magnet clip and lanyard (black models only), windscreens, element covers, interchangeable single and double mic holders

    • Accessories available separately include complete accessory kits, clothing clips, three-pack element covers and three-pack windscreens

    • 9.8' (3.0 m) cable permanently attached to mic, TA3F connector at power module

    • RoHS compliant—free from all substances specified in the EU directive on hazardous substances

    • Also available as:
      AT899c – less power module; 55" (1.4 m) cable, unterminated
      AT899c-TH – same as AT899c but in "theater" color (beige)
      AT899cL4 – less power module; 55" (1.4 m) cable terminated with Lemo connector for Sennheiser SK wireless systems
      AT899cL4-TH – same as AT899cL4 but in "theater" color (beige)
      AT899cT4 – less power module; 55" (1.4 m) cable terminated with TA4F connector for Shure wireless systems
      AT899cT5 – less power module; 55" (1.4 m) cable terminated with TA5F connector for ATW-U101 body-pack wireless system
      AT899cT5-TH – same as AT899cT5 but in "theater" color (beige)
      AT899cW – less power module; 55" (1.4 m) cable terminated with locking 4-pin connector for A-T UniPak™ wireless systems
      AT899cW-TH – same as AT899cW but in "theater" color (beige)

  • Specifications

    ELEMENTFixed-charge back plate, permanently polarized condenser
    POLAR PATTERNOmnidirectional
    LOW FREQUENCY ROLL-OFF80 Hz, 12 dB/octave
    OPEN CIRCUIT SENSITIVITYPhantom: -43 dB (7.0 mV) re 1V at 1 Pa
    Battery: -46 dB (5.0 mV) re 1V at 1 Pa
    IMPEDANCEPhantom: 200 ohms
    Battery: 250 ohms
    MAXIMUM INPUT SOUND LEVELPhantom: 138 dB SPL, 1 kHz at 1% T.H.D.
    Battery: 116 dB SPL, 1 kHz at 1% T.H.D.
    DYNAMIC RANGE (typical)Phantom: 108 dB, 1 kHz at Max SPL
    Battery: 86 dB, 1 kHz at Max SPL
    SIGNAL-TO-NOISE RATIO64 dB, 1 kHz at 1 Pa
    BATTERY CURRENT / LIFE0.4 mA / 1200 hours typical (alkaline)
    SWITCHFlat, roll-off (recessed)
    WEIGHT (MICROPHONE)0.02 oz (0.5 g)
    WEIGHT (POWER MODULE)3.6 oz (102 g)
    DIMENSIONS (MICROPHONE)0.63" (16.0 mm) long,
    0.20" (5.0 mm) diameter
    DIMENSIONS (POWER MODULE)5.71" (145.0 mm) long,
    0.83" (21.0 mm) diameter
    CABLE9.8' (3.0 m) long (permanently attached to microphone), 0.08" (2.0 mm) diameter, 2-conductor, shielded cable with TA3F output connector that mates with TB3M jack on power module
    ACCESSORIES FURNISHEDAT8537 power module; AT8439 cable clip; clothing clip base; viper clip base; magnet clip base and plate with lanyard; three single mic holders; two double mic holders; two element covers; two windscreens; battery; protective carrying case
    Click on the chart to view the larger image

  • Downloads

    AT899 Specification Sheet (pdf 88.42 KB)
    AT899 Submittal Sheet (pdf 289.64 KB)
    Optional Windscreens / Mounts
  • Reviews


    by PowerReviews
    Audio-TechnicaAT899 Subminiature Omnidirectional Condenser Lavalier Microphone

    (based on 1 review)

    Ratings Distribution

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    • 1 Stars



    Reviewed by 1 customer

    Displaying review 1

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    Incredibly Tiny Performer


    from Central New York

    Site Member


    • Film/Video Production
    • Studio Broadcast


      Best Uses

        Comments about Audio-Technica AT899 Subminiature Omnidirectional Condenser Lavalier Microphone:

        This incredibly tiny microphone performs well hidden in sets, articles of clothing, in a news desk, or interviews, and with all of the included mounting accessories, doing so is easy.

        • 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:
        • Audio Quality:
        • Durability:
        • Ease of Use:

        Displaying review 1

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      • Q & A

        Do you have questions about this product?

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

        10 Questions | 12 Answers
        Displaying questions 1-10
        • Q:

          Can I buy 6 of the lavalier clips and 6 windscreens or do I have to buy the whole kit?
          Asked on 9/17/2015 by Sebastian

          1 answer

          • Staff Reviewer


            Thank you for your inquiry. You can buy the windscreen (AT8151 black or AT8151-TH beige) and the clip, AT8461 through an Audio-Technica dealer.

            Answered on 9/22/2015 by AudioSolutionsManager from Audio-Technica U.S., Inc.
        • Q:

          Connecting AT899 without power module to a 3.5mm bias

          Hi - I have a HD wall mount camera with 3.5mm connector that can supply up to 2.5V / 4mA bias to a microphone.

          Can I take the TA3F connector and convert it to 3.5mm using TB3M to 3.5mm adapter cable?
          I would be bypassing the power supply since I have 2.5V / 4mA bias available on the 3.5mm.

          The AT899 says that it can work down to 1.5V / 0.4mA

          Asked on 6/21/2015 by Telenochek from San Jose

          1 answer

          • A:

            No, you may not bypass the power module. Refer to blog:


            Answered on 7/10/2015 by AudioSolutionsSpec3
        • Q:

          24v or 48v phantom power for AT899- which is better to use?

          Hi. I am connecting the AT899 to a mixer that provides either 24v or 48v phantom power. What would be the best choice, and why, please? Thanks for any help!
          Asked on 11/24/2014 by vegdiver

          2 answers

          • A:

            Below there is this answer, so which is correct?
            "Please Note: The power-module is 100% necessary for wired use. If you remove the power-module and connect the microphone directly to a phantom power source, this will permanently damage the microphone and void the warranty."

            Answered on 11/3/2015 by J Frank from Boston
          • A:

            Thank you for your inquiry. Either will be fine. The mic will operate in a range from 11V to 52V.

            Answered on 11/26/2014 by AudioSolutionsManager from Stow, OH
        • Q:

          Is there an adaptor that allows you to connect this microphone to a computer through a USB port?
          Asked on 10/14/2014 by BSegal from Washington, DC

          1 answer

          • A:

            They are a number of ways to adapt a microphone with an XLR output connector to the USB port on a computer. Since the AT899 can provide its own power via a single AA battery installed in the provided inline AT8537 Power Module, you could simply add an XLR to USB adapter cable between the power module and the computer. This would be the least expensive way and should be fine if you are simply recording the microphone audio but do not need to monitor mic audio as it is being recorded.
            If you do want to monitor the audio, you may want to consider an XLR to USB Adapter that includes a headphone jack on it so you can plug a pair of headphones into the adapter. The headphone jack on an adapter should be in circuit BEFORE the Analog to Digital converter in the adapter, and therefor provide "direct" monitoring of the microphone signal without latency. By contrast, if you monitor the audio through headphones plugged into the headphone jack on the computer, you will encounter latency as a result of the signal having to pass through the Analog to Digital converter in the adapter, through the recording program, and the Digital to Analog converter in the computer.
            You could also use a USB Audio Interface or Audio Mixer with a USB output connector on it between the power module and the computer. These devices typically have headphones jacks for direct monitoring on them as well.

            Answered on 10/24/2014 by AudioSolutionsSpec1 from Stow,OH
        • Q:

          AT899 with a wireless transmitter?

          I own two AT899 lav mics, and they sound fantastic wired in use with my portable field recorder. Is there ANY POSSIBLE solution to use these same lav mics with a wireless transmitter for capturing actor's dialog? If so, what wireless transmitter can accept the output from the AT899 mic or the AT8537 Power Module? Would it be possible with some sort of XLR adapter in combination with the AT8537 Power Module? I fully understand Audio-Technica manufactures different versions the AT899 for use with various wireless systems -- that's not what I'm asking about. Is it POSSIBLE to use the AT899, with or without the AT8537 power module (whatever works) with a wireless transmitter? Thanks!
          Asked on 5/14/2014 by LocationSoundGuy

          2 answers

          • A:

            You can have an adapter made that will adapt the mic for use with whatever transmitter you like. I use Sennheiser when I can't be wired, and I have a little $25 cord that has one end terminated to match the locking 1/8" Sennheiser G2 radio and the other end terminated with the female version of the AT899's plug. Works great and very versatile. I can't find where I got mine made, but any custom cable house should be able to make them. Audio Technica and Sennheiser both supply enough technical information (about which wire does what) in their manuals, and the ends are available…

            Answered on 3/28/2016 by NonFiction Media from Seattle, USA
          • A:

            Thank you for your inquiry. These would have to be rewired as wireless mics. Then they could no longer be used as a wired microphone.

            Answered on 5/29/2014 by AudioSolutionsManager from Stow, OH
        • Q:

          This mic has a hissing noise what should I do?

          Why does this mic have a hissing noise? It should be nice and clear? I am using the H4n XLR connection with battery?
          Asked on 1/13/2014 by 2cool4games from Milwaukee, WI, USA

          1 answer

          • A:

            Please contact the Audio-Technica Audio Solutions team with your inquiry. Please submit a detailed description of your inquiry, including what microphone you are using, what you are attempting to connect to, and any adapters that you might using. Additional information might be requested by the Audio Solutions Specialist.



            Answered on 1/16/2014 by AudioSolutionsSpec2 from Stow, OH
        • Q:

          What are the best ways to attach the mic to various shirts?

          Are there any photos or diagrams that show how to use all the attachments to configure the mic on different shirts and fabrics? I'm looking for examples of best practices. Thanks.
          Asked on 7/29/2013 by DanS from Portland, OR, USA

          1 answer

          • A:

            The best way to attach a microphone to any use will be done so using the Broadcast Loop.

            Below is a link to a .PDF document that shows how to do this. The Broadcast Loop can be found on Page 8.



            Answered on 8/6/2013 by AudioSolutionsSpec2 from Stow, OH
        • Q:

          Compatibility with a school sound system

          How do I know if this is compatible with the current sound system that is in the elementary school (want to buy for a school to have a wireless microphone that does not have to be hand held). Or would you recommend a particular type?
          Asked on 5/24/2013 by curiousaboutwireless

          1 answer

          • A:

            Thank you for your inquiry. The mic you indicated is a wired mic. There are many variable to consider when recommending a wireless system. Please contact our Audio Solutions Team at 330-686-2600 ext 5000. They can help with this.

            Answered on 6/3/2013 by AudioSolutionsManager from Stow, OH
        • Q:

          is there an adapter so this AT899 lav can connect to a Unipak Transmitter?
          Asked on 8/22/2012 by knewtonian

          1 answer

          • A:

            Thank you for your inquiry. There is not an adpater for this, although we do make a wireless version of the microphone, the AT899cW.

            Answered on 8/27/2012 by AudioSolutionsManager from Stow, OH
        • Q:

          How do I turn the microphone on and off?!?

          Dumb question, I know. There seems to be a recessed switch that seems like it can only be moved with the tip of a pen, but I don't want to touch that.

          Thanks so much.
          Asked on 12/16/2011 by Patricia

          1 answer

          • A:

            Thank you for your question, which is not-at-all a dumb question.

            The AT899 does not have an on/off "power" switch. The switch located on the power-module is called a Flat/Roll-Off switch, which is designed to reduce some low frequency information in more noisy environments. For this "condenser" microphone to work, you will either need to send phantom power or use a battery that can be installed in the power-module. For proper connection to your input device, please contact the manufacturer of that input device. You may also contact us for additional assistance.

            Please Note: The power-module is 100% necessary for wired use. If you remove the power-module and connect the microphone directly to a phantom power source, this will permanently damage the microphone and void the warranty.

            Hope this helps!

            Answered on 12/19/2011 by AudioSolutionsSpec2 from Stow, OH
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