Miniature Omnidirectional Microphone AT899
Clear voice quality, suitable for accurate replay in speeches, teaching, stage performances, and television broadcasts.
Ultra-compact and discreet design (5mm outer diameter), ideal for applications requiring concealed microphone placement.
Equipped with a variety of different accessories for wearing.
A high-pass filter switch is included, which can attenuate low-frequency noise without compromising the audio quality of the received signal.
Available in black and beige (skin tone AT899-TH model) for selection.
It can be powered by battery or phantom power.
The AT899 is a superminiature condenser microphone designed to be worn on performers' clothing, ties, or hair accessories, providing superior sound quality without hindering appearance. When wearing it on a tie, please position the microphone holder about 150mm below the neck. To avoid noise caused by clothing touching the microphone, ensure the holder does not come into contact with other clothing.
The individual and dual microphone brackets can be easily swapped between all bases. To reduce wind noise when the AT899 microphone is used for close-talk recording, please use the included windscreen. This also helps to reduce wind noise in the recording environment. Additionally, please use the included microphone head protector to prevent accidentally dropping metal fragments or iron shavings into the microphone head.
The AT899 microphone requires operation with 11V to 52V phantom power or 1.5V AA batteries. When using phantom power, batteries are not required to be installed.
The XLRM connector on the power supply module features a low-impedance balanced output. The microphone audio signal is output via the 2nd and 3rd pins of the XLR male connector, while the 1st pin is connected to ground (shield). The output phase will be set to positive phase level on the 2nd pin.
AT899 Technical Specifications
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| Component | Fixed charging back panel, polarity capacitor microphone head |
| Directional | Omni-directional directional |
| Frequency Response | 20~20,000 Hz |
| High-pass filter | 80 Hz, 12 dB/octave |
| Open-path sensitivity | Phantom Power: -43 dB (7.0 mV) at 1V into 1 Pa, Battery: -46 dB (5.0 mV) at 1V into 1 Pa |
| Impedance | Imaginary Power Supply: 200 Ohms, Battery: 250 Ohms |
| Input Sound Pressure Level | Imaginary Power Supply: 138 dB Sound Pressure, 1 kHz at 1% T.H.D. Battery: 116 dB Sound Pressure, 1 kHz at 1% T.H.D. |
| Dynamic Range (Typical Value) | Phantom Power: 108 dB, 1 kHz at high sound pressure; Battery: 86 dB, 1 kHz at high sound pressure |
| Imaginary Power Supply | Direct current 11~52V, power consumption 2mA typical |
| Battery | 1.5V AA 5-cell battery |
| Battery Consumption / Lifespan | 0.4mA / 1,200 hours (alkaline battery) |
| Switch | Flat, High-pass Filter (Slot Switch) |
| Weight | Microphone: 0.5g Power Module: 102g |
| Dimensions | Microphone: 16.0mm long, 5.0mm diameter Power module: 145.0mm long, 21.0mm diameter |
| Output Terminal | Built-in 3-pin XLRM Cannon male connector |
| Conductor | 3.0 m in length, 2.0 mm in diameter, microphone fixed connection, 2-core wire with shielded wire, connected to the TB3M socket of the power module with a TA3F plug. |
| Standard Configuration | AT8537 Power Module; AT8539 Connector Pin; Clothing Pin Base; Snake Pin Base; Magnetic Pin Base with Metal Sheet and Tie String; 3 Single Microphone Stands; 2 Dual Microphone Stands; 2 Radio Head Protection Caps; 2 Windproof Cotton Covers; Battery; Protective Bag |
