audio technica / AT9921

This compact, high-quality monaural microphone can be switched between unidirectional and omnidirectional modes. It features a newly developed rubber floating structure that reduces external noise and vibrations. Its full metal screen is also used. It features two power sources: plug-in power and LR44 batteries, allowing it to be connected to a variety of devices. It can also be used with computers via a 3-pole plug.

■Condenser microphone, back electret type
■Polar pattern: Cardioid/Omnidirectional switchable
■Frequency response: 100Hz-15kHz
■Output impedance: 2.0kΩ
■Sensitivity: -38dB (0dB=1V/1Pa, 1kHz)
■Plug: Microphone plug: φ3.5 gold-plated 3-pole mini (L-type)
　Power module: φ3.5 gold-plated 2-pole mini (L-type)
■Power source: Compatible with LR44 batteries or plug-in power
■Battery life: Approximately 300 hours (continuous use)
■Size/weight: 24.5mm high, 55mm wide, 61mm deep, approximately 46g (excluding cord)
■Accessories: Power module, LR44 battery (for testing)