Vocal Microphone

For studio-quality sound in live performance, a smooth, tailored response for warm, accurate sound.


  • Smooth frequency response with gradual presence rise
  • Highly consistent supercardioid polar pattern provides superior gain-before-feedback
  • Electronic low-frequency roll-off compensates for proximity effect
  • Wide dynamic range (117 dB) and low distortion characteristics
  • Very low susceptibility to RFI and electromagnetic hum
  • Advanced cartridge shock-mount system absorbs mechanical shocks and reduces handling noise
  • Built-in pop filter reduces undesirable wind and breath sounds
  • Legendary Shure quality and reliability

Shure BETA 87A: Condenser Vocal Mic



  • Electret Condenser

Frequency Response

  • 50 to 20,000 Hz

Polar Pattern

  • Supercardioid

Output Impedance

  • EIA rated at150 Ω(100 Ωactual)


at 1kHz,open circuit voltage

  • -52.5 dBV/Pa(2  mV)[1]

Maximum SPL

1 kHz at 1% THD,1 kΩ load

  • 140.5 dB

Signal-to-Noise Ratio

Ref. 94 dB SPL at 1 kHz

  • 70.5 dB

Dynamic Range

at 1kHz,1 kΩ load

  • 117 dB

Clipping Level

1 kHz at 0.25% THD,1 kΩ load

  • -6  dBV (0.5  V)

Self Noise

typical,equivalent SPL, A-weighted

  • 23.5  dB


  • Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3



  • 0.207 kg(0.475 lbs)


  • Three-pin professional audio (XLR), male, balanced


  • Aluminum construction with painted blue metallic finish, and hardened steel grille with nickel satin chrome plating

Power Requirements

  • 11 to 52  V DCphantom power (1.2  mA)