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

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 26 reviews
Write your review

Great Microphone and great Price

The AT4040 has been a workhorse in my project studio for years. I've used them on just about everything - horns, upright bass, grand piano, acoustic guitar, guitar cabs, and (my favorite) as drum overheads. I find that the AT4040 subdues some of the mid and high-mid frequencies in voices. For one of the male vocalists I regularly work with, the AT4040 is better suited than my Neumann TLM49. As overheads, the AT4040's provide a nice cymbal sheen without getting too glassy, and really bring out the lows and low-mids of the drums themselves. Real thunder territory here heh Just remember, when using them as overheads, to use the 10dB pad on the AT4040's to save your pre's and converters when you apply 48V phantom power!

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

Great God Almighty

I own one of these AT4040 and I must say I am truly thankful to the Lord for it. I used it to record my female lead and backing vocals in a gospel song and it was great! The AT4040 handle the emotions and pressure of high soprano very well. When you have a mic that sound as excellent as the AT4040 it really brings out the best in you!
Music background: Singer, Song writer, studio 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