Precision-engineered. Integrated preamp. Two-position contour switch for kick drum & other low-frequency applications.

from $239.00

The Shure BETA®91A is designed for use with kick drums, as well as other traditional low-frequency applications including piano. Featuring an updated microphone capsule, integrated preamplifier, and XLR connection, Beta 91A offers a strong low-frequency response and is specifically tailored for bass frequency applications. The Beta 91A combines superior attack and punch for studio-quality sound, even at extremely high sound pressure levels (SPL).



Drums / Percussion

Microphone Type


Lightweight, sensitive diaphragm. Precisely and smoothly captures sound nuances. Powered by battery or phantom power supply.

Polar Pattern


Picks up the most sound from above the flat mounted microphone and sound sound from the sides.

Frequency Response


Smooth, extended response. Tuned to accentuate specific types of instruments or voices.

Form Factor


Model Line


BETA Microphone Product Brochure (PDF)
Beta 91A Specification Sheet (PDF)
BETA 91A User Guide (PDF)
  • Uniform half-cardioid polar pattern for maximum gain-before-feedback and rejection of off-axis sound
  • Precision-engineered low-profile design features integrated preamplifier and XLR connector to maximize setup efficiency while minimizing stage clutter
  • Frequency response tailored for kick drum/low frequency applications with a wide dynamic range for use in high SPL environments
  • Two-position contour switch to maximize attack and clarity depending on application: select the flat response setting for natural sound in most applications or the “low-mid scoop” setting for a strong low frequency “punch” with plenty of higher frequency attack
  • Requires no external mounting or accessories for ease of use and storage
  • Furnished with zipper pouch
Electret Condenser
Frequency Response
20 to 20,000 Hz
Polar Pattern
Half-cardioid (cardioid in hemisphere above mounting surface)