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Designed for professional recording, broadcasting and film/TV/video production Provides the narrow acceptance angle desirable for long-distance sound pickup Excellent sound rejection from the sides and rear of mic Switchable low-frequency roll-off Operates on battery or phantom power AT815b Specifications Element Phantom Power Requirements Condenser 9 - 52V, 2 mA typical Polar Pattern Battery Type Line + Gradient 1.5V AA/UM3 Frequency Response Battery Current/Life 30 - 20,000 Hz 0.4 mA/1200 hours typical Open Circuit Sensitivity Switch PHANTOM: -38 dB (12.5 mV) re 1V at 1 Pa BATTERY: -39 dB (11.2 mV) re 1V at 1 Pa Flat/roll-off Impedance Low Frequency Roll-off PHANTOM: 500 ohms BATTERY: 600 ohms 180 Hz, 12 dB per octave Maximum Input Sound Level Weight PHANTOM: 130 dB SPL, 1 kHz at 1% T.H.D. BATTERY: 115 dB SPL, 1 kHz at 1% T.H.D. 7.1 oz (200 g) Signal to Noise Ratio Output Connector 70 dB, 1 kHz at 1 Pa XLRM-type Dynamic Range (Typical) PHANTOM: 106 dB, 1 kHz at Max. SPL BATTERY: 91 dB, 1 kHz at Max. SPL Accessories Furnished: AT8405 stand clamp; windscreen; battery; protective case Conditions and Warranty Specification Sheet (pdf) Related Models: AT835b ¨Ï 2000 Audio-Technica U.S., Inc.
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