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Cardioid Condenser Microphone

U.S. Five-Year Limited End-User Warranty

*Manufacturer's Suggested Retail Price. Actual selling price may vary; please check with an authorized Audio-Technica dealer.

  • studio microphone
  • side-address microphone
  • microphone for studio
  • studio condenser microphone
  • accessories for side-address microphone

  • Overview
  • Features
  • Specifications
  • Reviews
  • Q & A

  • Overview

    The latest edition of the legendary AT4033 microphone, the side-address AT4033a offers low-noise, symmetrical, transformerless circuitry that results in exceptional transient response and clean output signals. A studio classic and bluegrass favorite, the AT4033 cardioid studio condenser is the microphone that broke the US$1000-barrier in its class. A strong up-front presence characterizes the sonic signature of this 40 Series pro-audio classic. The AT4033as 80Hz high-pass filter easily switches between flat frequency response and a low-end roll-off that diminishes ambient noise and popping with closely-miked vocals. Includes the AT8449a shock mount for superior isolation.

    *The AT4033a is the same microphone as the AT4033/CL. The AT4033a comes equipped with the AT8449a shock mount whereas the AT4033/CL included the AT8449 shock mount.*
  • Features

    • 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

    • The 2-micron-thick, vapor-deposited gold diaphragm undergoes a five-step aging process so that the optimum characteristics achieved remain constant over years of use

    • Floating-construction capsule assembly provides isolation from noise and vibration

    • 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

    • Custom shock mount provides superior isolation

  • Specifications

    ELEMENTFixed-charge back plate, permanently polarized condenser
    LOW FREQUENCY ROLL-OFF80 Hz, 12 dB/octave
    OPEN CIRCUIT SENSITIVITY-32 dB (25.1 mV) re 1V at 1 Pa
    IMPEDANCE100 ohms
    MAXIMUM INPUT SOUND LEVEL145 dB SPL, 1 kHz at 1% T.H.D.;
    155 dB SPL, with 10 dB pad (nominal)
    NOISE17 dB SPL
    DYNAMIC RANGE (typical)128 dB, 1 kHz at Max SPL
    SIGNAL-TO-NOISE RATIO77 dB, 1 kHz at 1 Pa
    SWITCHESFlat, roll-off;
    10 dB pad (nominal)
    WEIGHT13.4 oz (380 g)
    DIMENSIONS6.69" (170.0 mm) long,
    2.10" (53.4 mm) maximum body diameter
    OUTPUT CONNECTORIntegral 3-pin XLRM-type
    ACCESSORIES FURNISHEDAT8449a shock mount for 5/8"-27 threaded stands; microphone dust cover; protective carrying case
    Click on the chart to view the larger image

  • Reviews

    They made studio mics afordable


    before i became an engineer dreaming of owing this mic ,the magazines i read watching pictures for many years , finally ,great sounding all rounder mic , it's always ready to go mounted setup in the studio, engineers come to sessions bag packed filled with the 87's sounding microphones and others, i would say try this out first, prejudged thinking my AT4033a is not going to cut it, lesson ! always try you may like it, go try one

    Saint Lucia


    Just as good as the expensive mics


    I've been using this mic for 20 years, to record self-improvement albums. I wanted something that made my voice sound like those great radio and television announcers - intimate, powerful, great presence, warmth, power. With a little EQ and some compression in post (post production) it does exactly that. In 1990 we had an opportunity to record an album for Nightingale Conant, and I spent a lot of time talking with their recording engineer. We used an AKG 414C, which is supposed to be one of the best mics for recording a male voice. When I got home, I compared the recordings I made in the Nightingale studio with the recordings in my home studio and to me they sound equally good. The only difference I could hear - they leave more bass than I do. I EQ'd it out because we were still delivering the product on audio cassettes, and the sound was more clear when there was less bass. I've done a lot of recording with this mic, in my home studio, and it has always come through for me. I recommend it highly.

    Texas, USA

    Excellent mic for the money...


    I've had one fo these in the cabinet for about 15 years (?!) now. It was my "go to" mic for quite a while, now it's simply for secondary use, ambient and the like. Noise floor is a little bit high, but you have to spend twice the $ to do much better. If you use a good mic-pre, you'll be all set (avoid the pre's that are built in to many mixers, but a stand alone, it's worth the $). For primary vocals, it has a bit of a bump in the 4-5k range, so you get some "up front" presence. Good for lead vocals. The only improvement I might make is to sell it at a lower price. HA!


    AT4033a Cardioid Condenser Microphone

    4.3 3


  • Q & A

    I am recording vocals on the AT4033A mic. Certain words are being compressed even at lower volumes. For example the word "world". The front part of the word sounds like it is being compressed. Is there any way to fix this or do I need to get a different microphone? Thanks for any help you can give.

    Don the mixer

    Thank you for your inquiry. There is no compression built into the microphone. I'm not sure what would cause this.


    Hi, how can I connect the AT4033a mic to the macbook which has only one headphone input?


    Please contact our Audio Solutions Department at (330) 686-2600 ext 5000 or at for assistance with this.


    Hello, I recently purchased an AT 4033 SE at an estate sale that sat on the shelf for a bunch of years. The foam in the box had deteriorated, and I had to remove it completely from the box. Is there a place I could purchase a new foam insert for the wooden box the mic came in? Thanks in advance!


    Thank you for your inquiry. Please contact our Parts Department at 330-686-2600 ext. 5002. They would be happy to help you.


    the threads to the at8441 carriage have worn away. can that mechanism be replaced?

    rob os

    Please contact our Parts Department at (330) 686-2600 ext 5002 or at for assistance with this.


    Would the AT4033CL perform well as the "overheads" in a Glyn Johns drum kit mic set up?


    Thank you for your inquiry. Yes, These work well as overheads.


    I'd like to know which is a better choice to me , for single male voice Which is better choice this at4033 or at4040 . I cant test anyone that's why i have to do this question . Could you helpme to decide me . Thanks


    Thank you for your inquiry. I would recommend going with the AT4033/CL. That mic has been used/recommended for lead vocals for the last 15-20 years I'm sure it will work well for you!


    Is it a good idea to use two of the 4033/cl mics side by side in a live bluegrass stage performance.? I have tried to do this with no success. I just get terrible "howling" and feedback. What are the two switches on this unit and what are some examples of when and how they they should be used.? Is there a instruction manual and/or user guide for this unit? Where can I find it? Many thanks for these answers!!


    Yes, you may use the AT4033 mics live setting but with any sound reinforcement setup, your success will come from proper mic placement and having the sound system tuned to help combat feedback. You may find helpful information on the switches here: Microphones are considered accessories and do not have manuals. You may find specification sheets here:


    I have an at4033a and just got it with the shock mound. What cable does the microphone require to put into a headphone/1 8ths of an inch plug? Where can I buy it?


    The AT4033a is a condenser microphone and will require phantom power via an XLR cable. You may find additional helpful information here: Please contact our Audio Solutions Department at (330) 686-2600 ext 5000 or at for additional assistance with this.


    I have an AT 4033 that needs a new shock mount & clip. How do I order one? Thanks, Steve

    Steve MacMillan

    You may purchase an AT8449 Mount through your Authorized Dealer.


    Our AT4033 mic has suddenly gone real quiet. In testing it out, I note that when I engage the pad switch to either O or -10db the volume shoots back up to where I think it should be and then within 5-10 seconds, it fades to a very low output level.


    Please contact our Audio Solutions Department at (330) 686-2600 ext 5000 or at for assistance with this.