Subminiature Omnidirectional Condenser Lavalier Microphone

$559 + shipping (includes gst)

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.


  • 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

Fixed-charge back plate, permanently polarized condenser

Polar Pattern


Frequency Response

20-20,000 Hz

Low Frequency Roll-Off

80 Hz, 12 dB/octave

Open Circuit Sensitivity

Phantom: -43 dB (7.0 mV) re 1V at 1 Pa 
Battery: -46 dB (5.0 mV) re 1V at 1 Pa


Phantom: 200 ohms 
Battery: 250 ohms

Maximum Input Sound Level

Phantom: 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 Ratio

64 dB, 1 kHz at 1 Pa

Phantom Power Requirements

11-52V DC, 2 mA typical

Battery Type

1.5V AA/UM3

Battery Current / Life

0.4 mA / 1200 hours typical (alkaline)


Flat, 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

Output Connector (Power Module)

Integral 3-pin XLRM-type


9.8′ (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 Furnished

AT8537 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

Polar Pattern
Frequency Response
AT899 Spec Sheet (PDF) Download
AT899 Submittal Sheet (PDF) Download



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