The Audio-Technica AT4040 is a large-diaphragm cardioid condenser microphone delivering smooth, natural sound for vocal and acoustic instrument recording. Its balanced, transformerless circuitry provides exceptionally low noise (82 dB S/N ratio at 1 kHz), while the wide 20 Hz to 20 kHz frequency response and 145 dB maximum SPL handling ensure clean capture of even the loudest sources. A precision-machined, nickel-plated brass baffle provides enhanced element stability and optimal sensitivity. Supplied with a shock mount and dust cover.
Polar Pattern
Cardioid
Large diaphragm
Max SPL
145 dB
At 1 kHz, 1% THD
Dynamic Range
133 dB
S/N Ratio
82 dB
At 1 kHz, 1 Pa
Weight
360 g
Features
✓
Large-diaphragm condenser with smooth, natural sound character
Large-diaphragm condenser with smooth, natural sound character
✓
Balanced, transformerless circuitry for impressively low noise
Balanced, transformerless circuitry for impressively low noise
✓
Wide frequency response: 20 Hz to 20 kHz
Wide frequency response: 20 Hz to 20 kHz
✓
Switchable low-cut filter reduces footfall and low-frequency rumble
Switchable low-cut filter reduces footfall and low-frequency rumble
✓
Switchable -10 dB pad for high-SPL sources
Switchable -10 dB pad for high-SPL sources
✓
Precision-machined, nickel-plated brass acoustic element baffle
Precision-machined, nickel-plated brass acoustic element baffle
✓
Shock mount and dust cover included
Shock mount and dust cover included
✓
Requires 48V phantom power via XLR
Requires 48V phantom power via XLR
Specifications
| Element | Condenser (large diaphragm) |
| Polar Pattern | Cardioid |
| Frequency Response | 20 Hz — 20 kHz |
| Max SPL | 145 dB at 1 kHz (1% THD) |
| Dynamic Range | 133 dB |
| Signal-to-Noise Ratio | 82 dB (1 kHz at 1 Pa) |
| Pad | -10 dB (switchable) |
| Power Requirement | 48V phantom power |
| Weight | 360 g |











