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Average Price: $350
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$100
$401+
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Based on price data from 6 merchants for "Audio-Technica AT4021 Small Diaphragm Cardioid Condenser Microphone". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Unlock the full potential of your sound with the Audio-Technica AT4021 Small Diaphragm Cardioid Condenser Microphone. Designed for both critical studio and live applications, this microphone offers a low-mass diaphragm that enhances transient response and reduces unwanted noise, ensuring pristine audio capture. Its cardioid polar pattern provides excellent isolation of the desired sound source, making it an ideal choice for miking acoustic guitars or using as drum overheads.
With a flat and extended frequency response ranging from 20 to 20,000 Hz, the AT4021 delivers exceptional reproduction of both low and high-frequency sounds, while its low self-noise ensures compatibility with sophisticated recording equipment. A switchable 80 Hz high-pass filter and a 10 dB pad allow you to tailor the microphone's response to any environment, confidently handling high SPLs up to 156 dB without distortion.
The rugged construction of the AT4021 ensures it can withstand the rigors of the road, while essential accessories like a stand clamp, windscreen, and protective carrying case provide convenience and protection. Whether you're in the studio or on stage, this microphone is engineered to deliver outstanding performance and clarity.
Key Features:
- Cardioid polar pattern for excellent sound source isolation
- Frequency response: 20 – 20,000 Hz
- Switchable 80 Hz high-pass filter and 10 dB pad
- Maximum SPL of 146 dB (156 dB with pad)
- Low self-noise, perfect for digital recording
- Requires 48V phantom power
- Includes AT8405a stand clamp, windscreen, and protective carrying case
Product specs
| Microphone Type | Condenser |
| Polar Pattern | Cardioid |
| Diaphragm Size | 0.64" (16.3mm) |
| Frequency Response | 20Hz-20kHz |
| Max SPL | 146dB (156dB w/Pad) |
| Output Impedance | 250 ohms |
| Signal to Noise Ratio | 80dB |
| Self Noise | 14dB |
| Low Cut Filter | 80Hz (-12dB/octave) |
| Pads | -10dB |
| Connector | XLR |
| Weight | 0.26 lbs. |
FAQs
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What is the primary application for the Audio-Technica AT4021 microphone?
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The Audio-Technica AT4021 is ideal for studio recording applications, particularly for capturing acoustic instruments, vocals, and ambient sounds due to its cardioid polar pattern and wide frequency response.
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Does the Audio-Technica AT4021 require phantom power?
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Yes, the Audio-Technica AT4021 is a condenser microphone and requires phantom power to operate, typically provided by most audio interfaces and mixers with XLR inputs.
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How does the cardioid polar pattern of the AT4021 benefit recording?
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The cardioid polar pattern of the AT4021 helps isolate the desired sound source by minimizing pickup of sounds from the sides and rear, making it excellent for reducing unwanted background noise during recording sessions.
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Is the Audio-Technica AT4021 suitable for high sound pressure levels?
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Yes, the AT4021 can handle high sound pressure levels up to 146dB (or 156dB with the pad engaged), making it suitable for recording loud sound sources without distortion.
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What features enhance the AT4021's performance in digital recording?
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The AT4021 features low self-noise and a flat, extended frequency response, ensuring clear and accurate sound reproduction, which is ideal for high-resolution digital recording environments.
Videos
sillennium
5 Audio-Technica Condenser Mic Shootout: AT4041, AT4021, AT2021, ATM450, Pro37 With Scott Sill
Reviews
PROS
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Exceptional clarity and focus in sound capture, especially for acoustic guitars
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Ultra-low noise floor, quieter than many competitors
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Highly versatile for various recording scenarios: strings, pianos, choirs, percussion
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Extended frequency response, particularly impressive lows for a small diaphragm
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Natural tonal quality, excels with string instruments and vocals
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Excellent front-to-back sound rejection, great for close miking
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High SPL handling, suitable for loud instruments
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Compact and discreet design, ideal for on-the-go recording
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Competitive price for near-Neumann KM184 performance
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Effective in high-reflection environments, mimics hypercardioid pattern
CONS
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Requires a pop filter or windscreen for optimal vocal recording
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Off-axis response can affect stereo imaging in certain setups
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Lacks the airiness of some high-end models like Neumann KM184
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Audio-Technica AT4021 Small Diaphragm Cardioid Condenser Microphone.
Use cases and applications
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The Audio-Technica AT4021 is noted for its low self-noise and durability in various weather conditions, ideal for outdoor ambience recording.
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Owners have successfully used the AT4021 for capturing nature ambiences, but emphasize the need for good wind protection like Rycote Softies or blimps.
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Setup and maintenance
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For stereo recording, the AT4021 can be used in an ORTF setup for a wider stereo image, even if not a perfectly matched pair.
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Features and functionality
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The AT4021, being a small diaphragm cardioid microphone, is praised for its versatility in capturing a good stereo field with different arrangements.
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