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Subminiature Omnidirectional Condenser Lavalier Microphone

U.S. 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 LetroSonics wireless systems
      AT899cT5-TH – same as AT899cT5 but in "theater" color (beige)
      AT899cH – less power module; 55" (1.4 m) cable terminated with a screw-down 4-pin connector for use with Audio-Technica wireless systems featuring cH-style connector
      AT899cH-TH – same as AT899cH but in "theater" color (beige)
      AT899cW – less power module; 55" (1.4 m) cable terminated with a locking 4-pin connector for use with Audio-Technica wireless systems featuring cW-style connector
      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 318.71 KB)
    Optional Windscreens / Mounts
  • Reviews

    Incredibly Tiny Performer


    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.

    Central New York

    AT899 Subminiature Omnidirectional Condenser Lavalier Microphone

    4.0 1


  • Q & A

    How do I attach this mic to a canon camera that has an input for mics?


    You may plug the included AT8537 power module into a MIC level XLR input on your camera. If your camera has a 3.5mm stereo MIC level input, you may use an adapter such as the Hosa XVM-305F


    I have a tascam us144-mk2 which is audio interface. When I order at899, should I also order battery powerpack? Because Us144 already has its own phantom power, I think I dont have to order battery power pack of at 899. However, I'm not sure whether it works or not without battery powerpack. Could you let me know? One more question! Is there any new version or higher version of at899? Because I think it is a little bit old product. I will wait for your answer. Thank you.


    The AT899 includes the AT8537 power module which you will plug into your interface and engage the phantom power.


    Is it possible to bypass the battery component and input the microphone directly into a Zoom H6 with the phantom power (48V) turned on?


    Thanks for you inquiry. When you put phantom power through, it will automatically bypass the battery power.

    Is it compatible with IPhone 6plus? Can I use it with my IPhone 6plus?


    Thank you for your inquiry. No this will not work with an iPhone 6 Plus.


    Can I connect the AT899 to my smart phone using a XLR to 1/8 mini cable? I have always used the AT899 with a preamp connected to my DSLR. My iPhone does not like the preamp connected to it. It causes a pulsing static sound that peaks the meter. I thought I would eliminate the preamp and connect to the iPhone direct with the converting cable. Will the AT899 have enough gain connected with the XLR to 1/8 mini cable? Thanks for any suggestions.


    If the microphone is powered via a battery in the power module, you may use a proper adapter to connect to an camera. Most camera 3.5mm inputs are looking for a stereo signal so an adapter such as listed below will need to be used (not an XLR to TRS 3.5mm)


    Can I buy 6 of the lavalier clips and 6 windscreens or do I have to buy the whole kit?


    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.


    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 Thanks!


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


    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!


    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."

    J Frank

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


    Is there an adaptor that allows you to connect this microphone to a computer through a USB port?


    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.


    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!


    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...

    NonFiction Media

    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.