Large-Diaphragm Dynamic Broadcast Microphone


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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 ProSoundNetwork.com
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


  • 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


Element Dynamic
Polar Pattern Hypercardioid
Frequency Response 50-16,000 Hz
Low Frequency Roll Off 100 Hz, 6 dB/octave
Open Circuit Sensitivity –48 dB (3.9 mV) re 1V at 1 Pa
Switches Flat, roll-off
Weight 632 g (22.3 oz)
Dimensions 164.0 mm (6.45") long, 56.0 mm (2.20") diameter
Output Connector Integral 3-pin XLRM-type
Accessories Included AT8483 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
Audio-Technica Case Style R12


BP40 Submittal Sheet
BP40 Specification Sheet