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Audio-Technica AT4021

The AT4021 is a small-diaphragm cardioid condenser designed for critical studio and live applications where precision matters. It offers a flat, extended frequency response, a high maximum SPL, and a wide dynamic range, so it stays clean and accurate on demanding sources. The low-profile body is easy to position discreetly on drum overheads, acoustic instruments, or a live stage.

Its cardioid pattern isolates the source and rejects bleed from a busy tracking room or backline. It handles up to 146 dB SPL, with a 10 dB pad extending that to 156 dB for the loudest material. It runs on phantom power over a 3-pin XLR output, integrating easily into any professional rig.

ElementFixed-charge back-plate permanently polarized condenser
Polar PatternCardioid
Frequency Response20–20,000 Hz
Impedance250 Ω
Max SPL146 dB SPL (156 dB with 10 dB pad)
Phantom Power48V DC
OutputIntegral 3-pin XLRM-type