Shure Beta 91a
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- This item is covered for 3 years
What you need to know
What you need to know
- Half-cardioid condenser capsule optimized for kick drum, piano, and high-SPL low-frequency instruments.
- Surface-effect design for precise attack, solid low end, and excellent feedback rejection.
- Built-in EQ switch for cutting the low mids and enhancing impact and definition.
- Streamlined, rugged design with balanced XLR output, allowing easy placement without a clamp or mounting hardware.
Manufacturer Information
Shure
https://www.shure.com
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Algam SAS
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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.
Technical specifications
| Frequency response - start | 20 Hz | Nominal impedance | 146 Ω |
| Frequency response - end | 20 kHz | Self-noise | 29,5 dB |
| Sensitivity | -48,5 dBV/Pa (3,8 mV) | Connection | XLR |
| SPL max | 155 dB | Clamp included | No |
| Category | wired microphone | Included accessories | carrying pouch |
| Type | instrument | Color | Green |
| Directivity | hemicardioid | Weight | 428 g |
| Capsule | static | Dimensions (mm) | 139 x 95 x 20,5 |
| Attenuator | 7 dB | ||
Customer reviews
Based on 3 reviews
- 5 stars, 3 reviews
- 4 stars, 0 reviews
- 3 stars, 0 reviews
- 2 stars, 0 reviews
- 1 star, 0 reviews
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We no longer present this microphone! It does the job, and the advantage of this version is that it has an XLR jack directly, unlike the old version.
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Use for a cajon and nothing repeat a good big sound as I like to do live
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The ideal complement to BETA 52 for kicks that beat
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Questions frequently asked
Is the Shure Beta 91A suitable for miking a kick drum?
Its hemicardioid polar pattern and surface-effect design are intended for placement inside the kick drum. The maximum SPL of 155 dB allows it to handle high sound pressure levels, while the switchable EQ enhances the impact and definition of the attack.
Can it be used on a piano?
Placement on the piano's soundboard allows for a clear close-miking. Its frequency response ranges from 20 Hz to 20 kHz.
What power supply is needed for this microphone?
The condenser capsule with built-in preamp requires phantom power via the balanced XLR output. No XLR cable is included.
How does the Beta 91A's switchable EQ work?
The internal EQ switch cuts low-mids while boosting lows and highs. This adjustment promotes a clear attack within a dense mix.
What are the dimensions and included accessories?
With dimensions of 139 x 95 x 20.5 mm and a weight of 428 g, this microphone is designed to be placed directly on a surface. A carrying pouch is included, but no clip or cable.



