Audio-Technica AT4040 Large-diaphragm Condenser Microphone

Large-diaphragm Cardioid Condenser Microphone with Shock Mount
Audio-Technica AT4040 Large-diaphragm Condenser Microphone image 1
Audio-Technica AT4040 Large-diaphragm Condenser Microphone image 1
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Audio-Technica AT4040 Large-diaphragm Condenser Microphone
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A Versatile Condenser Mic for Studio and Live Sound!

When Audio-Technica first introduced the large diaphragm, side-address AT4040 mic, we couldn't wait to get one down to the studio to see what it could do. And we were impressed! The cardioid AT4040 is the mic to choose for accurate reproduction of acoustic guitars and percussion. You'll find a multitude of other applications for this versatile mic as well.

Audio-Technica AT4040 Microphone at a Glance:
  • A versatile condenser mic for recording, broadcast, and live sound
  • Exceptionally low distortion and excellent transient response from transformerless design
  • Full, rich sound from bottom to top
  • High SPL capacity and precision internal architecture
A versatile condenser mic for recording, broadcast, and live sound

The AT4040 was designed for professional recording and critical applications in broadcast and live sound. The versatile AT4040 will appeal to artists, engineers and producers looking for a mic that delivers a well-focused, musical sound with reliability and consistency.

Low distortion and excellent transient response from transformerless design

You'll be amazed by the AT4040's virtually nonexistent low-frequency distortion. It's a result of Audio-Technica's transformerless circuitry. This design also gives the AT4040 exceptional reproduction of high-speed transients, which makes this mic great for capturing the attack of any percussive instrument.

Full, rich sound from bottom to top

The AT4040 offers smooth, natural and extremely musical sonic character with a wide dynamic range. You can count on this mic to capture all the resonance and body from anything from a fine acoustic guitar to a male vocal. And the AT4040's two-micron-thick diaphragm provides accurate reproduction of even the most subtle sounds without sacrificing high-frequency performance.

High SPL capacity and precision internal architecture

Even though the AT4040 offers superb sensitivity, it's also able to handle extremely high SPLs - up to 145dB. A built-in 10dB pad allows you to put the AT4040 in front of sources up to 155dB, and an 80Hz highpass filter takes care of rumbles. The AT4040's nickel-plated brass element baffle has been precision-machined to provide enhanced element stability and optimal sensitivity. An open acoustical environment of the symmetrical housing assembly minimizes unwanted internal reflections for the most uncolored reproduction possible. If you could have only one microphone in your studio, the AT4040 might very well be your best choice!

Audio-Technica AT4040 Microphone at a Glance:
  • Large-diaphragm cardioid condenser mic with dozens of applications
  • Externally-polarized (DC bias) true condenser design
  • Technically-advanced large diaphragm tensioned specifically to provide smooth, natural sonic characteristics
  • Exceptionally low noise, wide dynamic range and high-SPL capability for greatest versatility
  • Transformerless circuitry virtually eliminates low-frequency distortion and provides superior correlation of high-speed transients
  • Precision-machined, nickel-plated brass, acoustic element baffle provides enhanced element stability and optimal sensitivity
  • Open acoustical environment of the symmetrical housing assembly minimizes unwanted internal reflections
  • State-of-the-art surface-mount electronics ensure compliance with A-T's stringent consistency and reliability standards
  • Switchable 80Hz hi-pass filter and 10dB pad
  • Includes AT8449 shock mount
  • Requires +48V phantom power
The Audio-Technica AT4040 is a mic for many applications!

Additional Media

Audio Technica Cut Sheet
Studio Microphone Buying Guide
Drum Mic Shootout with Mike Johnston of
New A-T Warranty
New in Stock at Sweetwater

Tech Specs

Microphone Type Condenser
Polar Pattern Cardioid
Diaphragm Size 0.8" (20.4mm)
Frequency Response 20Hz-20kHz
Max SPL 145dB (155dB w/10dB Pad)
Output Impedance 100 ohms
Signal to Noise Ratio 82dB
Self Noise 12dB
Low Cut Filter 80Hz
Pads -10dB
Color Black
Connector XLR
Weight 0.79 lbs.
Included Accessories Shock Mount, Dust Cover, Carry Case
Manufacturer Part Number AT4040

Customer Reviews

Based on 27 reviews
Write your review

I LOVE this mic!!

My history with mics hasn't been as extensive starting with the Samson C01 as a gift and then opting for the AT2035. The C01 required too much input gain to get a good signal, I would practically yell into it and the signal would be recorded very low so it could be that there's a defect. I like the 2035 but it was bit too warm for what I desired. I looked at this beauty and the Rode NT1 as my dream mics for a while and based on comparisons and price points​, I'm so glad I chose this. Vocals record so clean, crisp and accurate whether male or female. And the signal comes in very strong and consistent. I would definitely recommend 5 times over.

Amazing Rap Vocal Mic!

I picked up this condenser because my buddy has it and has recently been using it for rap projects. I myself have lately been working with rap clients as well. I have to say, I love this mic for that purpose. I have other mics like Neumann, Blue, Shure, Rode and a few others. I'm currently running the at4040 through an LA 610 into a WA76. I can safely say that this is my new favorite rap vocal go to mic. Very natural sound, forgiving upper midrange and smooth top end without harshness or undesired sibilance. Shaves off most of the processing work . Handles dynamics beautifully. Can't wait to try it on other sources like acoustic guitar and such, which I hear great things about as well. You cant go wrong with the price point and can't go wrong to add to your locker. A must have for sure.
Music background: Producer/Rec, Mix Engineer

Most expensive mic I've ever bought

I do vanity projects in my home studio. I had been using an Audio Technica AT2035 for about 3 years. Where I mostly record dudes, I was recording this young lady and her vocals came through very dark, even with the hi pass filter on the mic engaged. I ordered this as a step up. The Good: This mic is somewhat larger and so is the capsule. Made in Japan... I've never found electronic equipment made in Japan that wasn't the highest quality. Which brings me to the bad.... The Bad: It picks up EVERYTHING--- inside the vocal booth, I heard my wife and this girl's dad talking downstairs through my headphones... I had to holler at them to quit yelling at each other... They both thought I was crazy. The next session, it picked up the kids playing, laughing and giggling in the yard about 500 feet from the house. I've had to re-learn what I'm doing because this thing picks up nuances that I've not had the pleasure of dealing with. I can't wait to try this thing out on acoustic guitar.
Music background: over 30 years

Go-to workhorse mic

I have a stereo pair of these bad boys and use them on everything - acoustic guitars, mandolins, drum overheads, hard to go wrong.

Easily the best condenser in it's price range.

I have used this mic on vocals, acoustic guitar, flute, sax, and even harmonica. This microphone reproduces a natural sound that is accurate to the characteristics of the original sound source. This microphone has many uses in an active studio. When I look for any piece of gear I look for build quality/reliability, functionality, sound quality, as well as affordability. I like many others do not have $1500 to spend on a nice microphone, let alone $3,000 for a matched stereo pair. $600 for a stereo pair is definately feesable though. Anyways, if your in the market for a quality condenser mic for under $300, there isn't any reason to look any further.
Music background: Producerm, Recording Engineer, Musician

Sweetwater Advice

Stuart Niven

The Audio-Technica AT4040 is a wonderful microphone, great for a wide variety of musical sources. I have been using Audio-Technica for nearly ten years now and they have never ceased to amaze me with their flexibility and sonic fidelity. The AT 4040 gives a true representation of your source signal with no influence of its self, just an accurate, reliable and dependable high quality sound, every time you use it. Your recordings deserve this!
See also: Condenser Mics, Audio-Technica, Audio-Technica Condenser Microphones, Audio-Technica Condenser Microphones