Einführung
The Audio-Technica AT9900 is a high-quality, high-sensitivity compact stereo microphone designed for digital recording equipment. It features a newly developed pivot floating structure to reduce extraneous vibration noise and a free-angle mechanism for flexible cable output. The microphone includes an indoor/outdoor mode switch to reduce noise, such as wind, ensuring clear recordings in various environments. Its excellent acoustic characteristics are enhanced by a full-surface metal mesh, which helps reduce external noise interference.
Packungsinhalt
Before use, please ensure all items are present:
- Audio-Technica AT9900 Stereo Lavalier Microphone
- LR44 Batterie
Aufstellen
- Batterie einlegen: Open the battery compartment and insert the supplied LR44 battery, ensuring correct polarity. The microphone requires battery power for operation.
- Mit Gerät verbinden: Plug the 3.5 mm L-type gold-plated stereo mini jack into the microphone input port of your digital recording equipment (e.g., camera, portable recorder, computer).
- Mikrofonposition: Use the integrated clip to attach the microphone to clothing, such as a lapel or collar, ensuring it is positioned optimally for sound capture.

Image: The AT9900 microphone shown clipped to a jacket lapel, demonstrating its typical lavalier placement for recording.
Bedienungsanleitung
- Ein-/Ausschalten: Locate the ON/OFF switch on the microphone body. Slide the switch to the "ON" position to power on the microphone. Slide it to "OFF" when not in use to conserve battery life.
- Aufnahmemodus auswählen: The microphone features an L-CUT/FLAT switch.
- WOHNUNG: Use this setting for standard recording environments, typically indoors, where a full frequency response is desired.
- L-CUT (Low-Cut Filter): Use this setting in outdoor environments or situations where low-frequency noise (e.g., wind noise, rumble) needs to be reduced. This filter helps to improve clarity of speech or desired sounds by attenuating unwanted low-end frequencies.

Bild: Eine Nahaufnahme view of the AT9900 microphone's top panel, highlighting the L-CUT/FLAT switch, the AT9900 model indicator, and the ON/OFF power switch.
- Aufnahme starten: Start recording on your connected digital recording equipment. Monitor audio levels to ensure optimal sound capture without distortion.
Wartung
- Reinigung: Reinigen Sie das Mikrofongehäuse mit einem weichen, trockenen Tuch. Verwenden Sie keine flüssigen Reiniger oder Lösungsmittel.
- Lagerung: Bewahren Sie das Mikrofon an einem trockenen, kühlen Ort fern von direkter Sonneneinstrahlung und extremen Temperaturen auf.
- Batteriewechsel: Replace the LR44 battery when sound quality degrades or the microphone fails to power on. Dispose of used batteries responsibly.
- Kabelpflege: Um Beschädigungen zu vermeiden, sollten Sie scharfe Biegungen oder übermäßiges Ziehen am Kabel verhindern.
Fehlerbehebung
- Kein Ton/Geringe Lautstärke:
- Ensure the microphone is switched "ON".
- Check if the LR44 battery is correctly inserted and has sufficient charge. Replace if necessary.
- Verify the 3.5mm jack is fully inserted into your recording device's microphone input.
- Check the input settings and volume levels on your recording equipment.
- Verzerrter Klang:
- Reduce the input gain on your recording device.
- Stellen Sie sicher, dass sich das Mikrofon nicht zu nah an der Schallquelle befindet.
- Übermäßige Windgeräusche:
- Switch the microphone to the "L-CUT" mode.
- Consider using an external windscreen (not included) for very windy conditions.
Technische Daten
| Element | Stereo Electret Condenser |
| Richtcharakteristik | Unidirektional |
| Frequenzgang | 70-16,000 Hz |
| Empfindlichkeit | -42 dB (7.9 mV) re 1V bei 1 Pa |
| Impedanz | 2,000 Ohm |
| Stromversorgung | Battery/Plug-in Power |
| Akku-Typ | LR44 |
| Akkulaufzeit | Ungefähr 300 Stunden |
| Abmessungen (H x B x T) | 41 x 58 x 20 mm |
| Gewicht | 23 g (microphone only) / 37 g (item weight from specs) |
| Kabellänge | 1.6 m |
| Konnektor | 3.5 mm L-type gold-plated stereo mini jack |
| Signal-Rausch-Verhältnis | 80 dB |
| Material | Metall |
Hinweis: Änderungen der Spezifikationen im Zuge von Produktverbesserungen sind vorbehalten.
Garantie und Support
Audio-Technica products are manufactured to high quality standards. For warranty information, please refer to the warranty card included with your product or visit the official Audio-Technica webAuf der Website finden Sie Details speziell für Ihre Region.
For technical support, troubleshooting assistance, or service inquiries, please contact Audio-Technica customer support through their official webWebsite: Audio-Technica Official Store.