AT4021 Cardioid Condenser Microphone

Ideal for critical studio and live applications, the low-profile AT4021 offers a flat, extended frequency response, high maximum SPL and wide dynamic range. Its low self-noise is perfectly suited for the most sophisticated recording equipment. Its low-mass diaphragm improves transient response, increases response bandwidth and reduces handling and mechanical noise transfer. The microphone offers outstanding reproduction of low-frequency sounds.

Outstanding performance and rugged construction

High SPL handling and wide dynamic range

Flat, extended frequency response

Switchable 80 Hz hi-pass filter and 10 dB pad

High front-to-back rejection ratio—cardioid polar pattern improves isolation of desired sound source

Low self noise perfectly suited for digital recording equipment

Exceptional reproduction of low frequency sounds

Low-mass element for superb transient response

SPECIFICATIONS
ELEMENT	Fixed-charge back plate, permanently polarized condenser
POLAR PATTERN	Cardioid
FREQUENCY RESPONSE	20-20,000 Hz
LOW FREQUENCY ROLL-OFF	80 Hz, 12 dB/octave
OPEN CIRCUIT SENSITIVITY	-34 dB (19.9 mV) re 1V at 1 Pa
IMPEDANCE	250 ohms
MAXIMUM INPUT SOUND LEVEL	146 dB SPL, 1 kHz at 1% T.H.D.; 156 dB SPL, with 10 dB pad (nominal)
NOISE	14 dB SPL
DYNAMIC RANGE (typical)	132 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO	80 dB, 1 kHz at 1 Pa
PHANTOM POWER REQUIREMENTS	48V DC, 3.0 mA typical
SWITCHES	Flat, roll-off; 10 dB pad
WEIGHT	119 g (4.2 oz)
DIMENSIONS	144.0 mm (5.67") long, 21.0 mm (0.83") maximum body diameter
OUTPUT CONNECTOR	Integral 3-pin XLRM-type
ACCESSORIES FURNISHED	AT8405a stand clamp for 5/8"-27 threaded stands; windscreen; protective carrying case
AUDIO-TECHNICA CASE STYLE	S1