Pricing & Availability
- MSRP: n/a
- Discontinued
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AT4031 Documentation
Audio-Technica AT4031
Cardioid Pencil Condenser Microphone
The AT4031 was an electret pencil condenser microphone with a fixed Cardioid pickup pattern. The mic was discontinued by Audio-Technica, and replaced in the product lineup by the AT4041.
How do the AT4041 and AT4031 differ?
- The AT4041 has much higher sensitivity: 15.8mV/Pa.
- The AT4041 has lower impedance (100 Ohms).
- The AT4041 has a smoother frequency response; the AT4031 drops 1–2dB below 1kHz.
Both the AT4031 and AT4041 are fixed-cardioid electret condensers, with a signal-to-noise ratio of 70dB — meaning, a self-noise measure of 24dBA (assuming the SNR is A-weighted).
A recessed switch on the mic body provides a high-pass filter, which engages a 12dB/octave cut below 80Hz.
The mic’s body is made from turned brass, finished in black chrome.
Given its relatively low sensitivity, the AT4031 is likely better suited to close-miked loud sources such as snare drums. Conversely, the AT4031 would unlikely be satisfying on quiet acoustic instruments or distant ensembles, due to its self-noise and sensitivity.
Note: the photo on this profile is of the AT4041, which is similar but not identical. We have not found any usable photos of the AT4031 (but would welcome a contribution from the community).
The AT4031 shipped with a foam windscreen, a mic clip, and a padded carrying case.
The Audio-Technica AT4031 is also known as: 4031.
Specifications
| Frequency Response - CardioidClick Graph to Compare! |
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| Pickup Patterns | Pads & Filters |
|---|---|
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Cardioid
(5 mV/Pa; 30 - 20,000 Hz) |
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| Capsule Dimensions | Impedance | SPL/Noise |
|---|---|---|
| Diameter n/a Diaphragm gauge: 4 microns |
200 Ohms (Low) | Max SPL: 145 dB Self-noise: 24.0 dB(A) |
| Weight | Length | Max Diameter | Interface(s) |
|---|---|---|---|
| 140g (4.94oz) | 160mm (6.30'') | 21mm (0.83'') |
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| Power Specifications |
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