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Description:

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The AT813a is ideal for close-up interviews, vocals, overheads, piano, and strings. Its cardioid polar pattern reduces pickup of sounds from the sides and rear, improving isolation of desired sound source. The mic’s proximity effect provides added warmth when used close up. Features include a large protective screen that reduces “popping” and sibilant distortion. It operates on battery or phantom power.

- Ideal for close-up vocals, overheads, piano and strings
- Sound is similar to far more expensive studio microphones
- Low-mass diaphragm ensures minimum distortion
- Cardioid pattern provides added warmth when used close up
- Operates on battery or phantom power

SPECIFICATIONS
ELEMENT	Fixed-charge back plate, permanently polarized condenser
POLAR PATTERN	Cardioid
FREQUENCY RESPONSE	30-20,000 Hz
OPEN CIRCUIT SENSITIVITY	Phantom: -44 dB (6.3 mV) re 1V at 1 Pa Battery: -45 dB (5.6 mV) re 1V at 1 Pa
IMPEDANCE	Phantom: 200 ohms Battery: 270 ohms
MAXIMUM INPUT SOUND LEVEL	Phantom: 137 dB SPL, 1 kHz at 1% T.H.D. Battery: 123 dB SPL, 1 kHz at 1% T.H.D.
DYNAMIC RANGE (typical)	Phantom: 113 dB, 1 kHz at Max SPL Battery: 99 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO	70 dB, 1 kHz at 1 Pa
PHANTOM POWER REQUIREMENTS	9-52V DC, 2 mA typical
BATTERY TYPE	1.5V AA/UM3
BATTERY CURRENT / LIFE	0.4 mA / 1200 hours typical
WEIGHT	7.1 oz (200 g)
DIMENSIONS	7.60" (193.0 mm) long, 1.98" (50.3 mm) head diameter
OUTPUT CONNECTOR	Integral 3-pin XLRM-type
ACCESSORIES FURNISHED	AT8405a stand clamp for 5/8"-27 threaded stands; battery; soft protective pouch
AUDIO-TECHNICA CASE STYLE	S7

SPECIFICATION GRAPHS
Click on the chart to view the larger image
		POLAR PATTERN
		FREQUENCY RESPONSE