No description

Cardioid Condenser Microphone

  • Outstanding performance and rugged construction, ideal for critical studio & live applications
  • 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

    • audio technica AT4021
  • AT4021 Specifications


    Fixed-charge back plate permanently polarized condenser

    Polar Pattern


    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


    250 Ω

    Maximum Input Sound Level

    146 dB SPL, 1 kHz at 1% T.H.D.;
    156 dB SPL, with 10 dB pad (nominal)


    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

    48V DC, 3.0 mA typical


    Flat, roll-off; 10 dB pad (nominal)


    119 g


    21.0mm x 144.0mm (Diameter x Long)

    Output Connector

    Integral 3-pin XLRM-type

    Accessories Furnished

    AT8405a stand clamp for ⅝”-27 threaded stand; windscreen; protective carrying case


    audio technica support AT4021.pdf - Operation Manual