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Shure BETA 91A

Description

Essential Information About the Shure Beta 91A Surface-Effect Microphone



  • Hemicardioid Electrostatic Capsule optimized for kick drum, piano, and high-level low-frequency instruments.

  • Surface-Effect Principle for precise attack, solid bass, and excellent feedback rejection.

  • Built-in EQ Switch to scoop the low-mids and enhance impact and definition.

  • Streamlined and Robust Design with balanced XLR output, easy placement without clip or mount.



The Standard for Kick Drum and Piano Sound Capture


A flagship of the Beta series, the Shure Beta 91A has established itself on stages and in studios for capturing low-frequency sources with precision and punch. The heir to decades of Shure innovations, it combines discreet design, high SPL handling, and a sonic signature tailored for close miking. Placed inside the kick drum or on the piano soundboard, it delivers a clear, readable, and consistent response.



Who Is This Surface-Effect Microphone For?


Ideal for drummers and pianists, the Beta 91A also appeals to live and studio sound engineers seeking a quick-to-install, stable, and reliable solution. Its close-miking behavior, excellent off-axis rejection, and ease of placement make it a valuable ally for tours, TV sets, backline rentals, and demanding home studios.



Features and Benefits for Punchy Bass



Surface Effect and Hemicardioid Directionality


Placed directly on a surface, the microphone captures both the direct sound wave and its reflection, enhancing sensitivity and dynamics while controlling unwanted resonances. The hemicardioid pattern focuses on the source and limits bleed from other instruments.



Switchable EQ Designed for Impact


The internal EQ switch cleans up the low-mids while emphasizing bass and treble. The result: a clear attack and a kick that cuts through the mix effortlessly, even at high volume.



Integrated Construction, Immediate Connection


The preamp built into the chassis reduces bulk and secures the setup. The balanced XLR output ensures a clean connection to the console and integrates seamlessly into a standard workflow with phantom power.



Technical Specifications



Transduction and Directionality



  • Category: Wired microphone

  • Type: Instrument

  • Polar Pattern: Hemicardioid

  • Capsule: Static



Response and Levels



  • Frequency Response: 20 Hz - 20 kHz

  • Attenuator: 7

  • Nominal Impedance: 146 ?

  • Sensitivity: -48.5 dBV/Pa (3.8 mV)

  • Self Noise: 29.5 dB

  • Max SPL: 155 dB



Connection and Accessories



  • Connector: XLR

  • Cables Included: No

  • Switch: No

  • Clip Included: No

  • Accessories Included: Carrying pouch



Dimensions and Weight



  • Dimensions (mm): 139 x 95 x 20.5

  • Weight (kg): 0.43

Brand reference number: SSP BETA91A

Testimony

5,0 /5
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Use
This microphone needs no introduction! It does the job, and the advantage of this version is that it has a direct XLR connection unlike the previous version
Certified
Posted on 12/10/2016
By Fabien C.

use for a cajon and nothing to complain about, a good big sound as I like for live performance
Certified
Posted on 27/11/2011
By Emmanuel G.

The perfect complement to the BETA 52 for powerful kicks
Certified
Posted on 20/10/2014
By Sébastien O.

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