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Shure BETA91A Kick Drum Microphone
Product #4010 | SKU BETA91A
Usually ships in 3 - 4 weeks
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Shure BETA91A Kick Drum Microphone

Product #4010 | SKU BETA91A
Usually ships in 3 - 4 weeks

Product Features
  • Wide Frequency Response
  • Low-Profile Design
  • Cardioid Polar Pattern
  • Interchangeable Cartridge
Customer Reviews
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Product Details
  • Product: #4010
  • SKU: BETA91A
Not currently for sale
Contact us for more information


The Shure Beta 91A is a boundary microphone that can double as a kick drum mic, as it can capture the punch and attack of low-frequency instruments such as kick (bass) drums. It features a wide frequency response well suited for capturing a variety of audio signals such as organ and piano. The flat, boundary design also aides in producing a strong, solid low-end response, as well as make it easy to mount inside of a bass drum. The Beta 91A is ideal for both recording and sound reinforcement alike.


  • Uniform half-cardioid polar pattern for maximum gain-before-feedback and rejection of off-axis sound
  • Low-profile design features integrated preamplifier and XLR connector to facilitate setup efficiency while minimising 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 maximise 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
  • Furnished with zipper pouch


Transducer Condenser (electret bias)
Polar Pattern Half-cardioid
Frequency Response 20 to 20,000 Hz
Output Impedance 146 Ohms
Sensitivity -48.5 dBV/Pa (3.8 mV)
Maximum SPL 2500-Ohm load: 155 dB (1 kHz at 1% THD)
1000-Ohm load: 151 dB (1 kHz at 1% THD)
Maximum Input Sound Level 20 Hz to 20 kHz, less than 1% THD
Signal-to-Noise Ratio 64.5 dB
Dynamic Range 2500-Ohm load: 125.5 dB (1 kHz at 1% THD)
1000-Ohm load: 121.5 dB (1 kHz at 1% THD)
Clipping Level 2500-Ohm load: 12.5 dBV
1000-Ohm load: 7.5 dBV
Self Noise (Equivalent SPL) 29.5 dB SPL (A-weighted)
Common Mode Rejection ≥55 dB (20 Hz to 200 kHz)
Switch Frequency Contour Switch: 7 dB of attenuation centred at 400 kHz
Power Requirements Phantom Power: 48 VDC +/- 4 Vdc (IEC-268-15/DIN 45 596), positive pins 2 and 3
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Power Requirements 11 to 52 VDC phantom power, 5.4 mA
Output Connectors 1 x XLR male, balanced
Dimensions 95.1 x 139.1 x 20.3 mm
Weight 470 g

Australian Shipping Via DHL
DHL offers a great express shipping service to Australia from New Zealand. We are proud to be able to offer express shipping to main cities on the east coast of Australia, within the same timeframe ( If not quicker ) than local Australian courier companies. Prior to the Covid-19 outbreak, service standards for these main centers was overnight. However these services have been impacted greatly, and as such the overnight service has been suspended. Overnight shipping will likely resume once things have returned to normal.

Qualifying main centers include:

  • Brisbane
  • Sydney
  • Adelaide

Whilst this service is extremely efficient and will likely be delivered within 1-2 days 99.9% of the time, it cannot be guaranteed. In the case where something were to go wrong with your delivery and it doesn’t arrive within the specified time frame, in most cases it will be delivered by the next day.

While not all major cities are eligible for overnight delivery, they still benefit from this great service. Other centers throughout Australia will have a typical delivery ETA of 2-4 days. (Excluding rural delivery address where this ETA can be extended to an additional three or more days).

If you require urgent shipping and you don’t reside in one of the cities stated above, please contact us and we can find a solution that works best for you.

Please Note: Shipping via DHL is not available to PO boxes and/ or parcel boxes etc.

In The Box

  • Shure BETA91A Kick Drum Microphone
  • Zippered Carrying Bag


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  • Product: Shure BETA91A Kick Drum Microphone
  • Manufacturer: Shure
  • Model: BETA91
  • SKU: BETA91A
  • RM Product #: 4010
  • Element Type: Condenser
  • Polar Pattern: Cardioid
  • Warranty: 2 year manufacturer warranty (excluding consumable e.g. lithium-ion batteries).