Audio-Technica Menu


Large-Diaphragm Dynamic Broadcast 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.

  • broadcast microphone,radio microphone
  • broadcast mic,dynamic broadcast microphone
  • on-air broadcast mic,broadcast microphone
  • radio microphone,broadcast microphone
  • on-air broadcast microphone,broadcast mic
  • broadcast mic accessory
  • broadcast microphone accessory

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

  • Overview

    The BP40 broadcast vocal microphone offers a rich, natural, condenser-like sound from a large-diaphragm dynamic design. The large diaphragm features patented floating-edge construction that maximizes diaphragm surface area and optimizes overall diaphragm performance, while the humbucking voice coil prevents electromagnetic interference (EMI).

    With rugged construction and stylish, waveform-inspired design, the BP40 delivers clear and articulate reproduction, ideal for any broadcast application. Optimized capsule placement helps maintain a commanding vocal presence even at a distance, while the multistage windscreen provides superior internal pop filtering. The BP40 broadcast microphone also includes a switchable 100 Hz high-pass filter to provide even more pop protection.


    Video: Pensado's Place Reviews the BP40 Broadcast Microphone

    Video: Working Class Audio Review: Audio-Technica BP40

    Review: A-T BP40 - Big New On-Air Sound by Radio World

    Review: Audio-Technica BP40 by Audio Media International

    Review: Audio-Technica BP40 Large Diaphragm Dynamic by

    Review: Audio-Technica BP40 Large Diaphragm Dynamic Broadcast Microphone by ProSoundWeb

    Review: BP40 large-diaphragm dynamic mic by TapeOp

    Review: Audio-Technica BP40 Large Diameter Dynamic Mic by Ty Ford Audio and Video

  • Features

    • Rich, natural, condenser-like sound

    • Large diameter diaphragm with patented floating-edge construction for optimal diaphragm performance

    • Humbucking coil prevents electromagnetic interference (EMI)

    • Hypercardioid polar pattern improves isolation

    • Switchable 100 Hz high-pass filter

    • Superior off-axis rejection for maximum gain before feedback

    • Optimized capsule placement for commanding vocal presence even at a distance

    • Multistage windscreen provides superior internal pop filtering

    • Rugged, all-metal construction for dependable use in professional broadcast environments
  • Specifications

    POLAR PATTERNHypercardioid
    OPEN CIRCUIT SENSITIVITY48 dB (3.9 mV) re 1V at 1 Pa
    IMPEDANCE450 ohms
    SWITCHESFlat, roll-off
    WEIGHT632 g (22.3 oz)
    DIMENSIONS164.0 mm (6.45") long, 56.0 mm (2.20") diameter
    OUTPUT CONNECTORIntegral 3-pin XLRM-type
    ACCESSORIES FURNISHEDAT8483 mounting clamp for 5/8"-27 threaded stands; 5/8"-27 to 3/8"-16 threaded adapter; soft protective pouch

    OPTIONAL ACCESSORY: AT8484 shock mount for 5/8"-27 threaded stands
    Click on the chart to view the larger image
    Polar Pattern
    Polar Pattern
    Frequency Response
    Frequency Response

  • Downloads

    BP40 Specification Sheet (pdf 362.89 KB)
    BP40 Submittal Sheet (pdf 226.18 KB)
    BP40 Literature Sheet (pdf 332.16 KB)
    Optional Windscreens / Mounts
  • Reviews

  • Q & A

    What is the SPL rating of the BP40?


    Thank you for your inquiry. We do not provide a spec for Max SPL on dynamic microphones. Because it is dynamic, it can handle just about all the SPL you can throw at it.


    On-air radio station - high EMI radiation We have a studio that suffers from external high levels of EMI, so high that EV RE-27s are unworkable as was a Heil - even though they have a hum-bucking coil. Wish to stay with dynamics rather than condensers so how effective might your BP40 be?


    Please contact one of our representatives in your area to inquire about a possible demo in your particular setting. Audio-Technica (S.E.A.) Pte. Ltd Singapore Tel: +65-67495686 Fax: +65-67495689 E-mail: Web site:


    Do you use a transformer in the output circuit of the BP40? While I understand a humbucking coil is used to combat EMI, does the BP40 also have a small transformer as part of its output circuitry?




    Is a neodymium magnet used for the BP40 mic element?


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