Shure BETA 91A-X Boundary Condenser Microphone Half Cardioid for Kick Drum

The Shure BETA 91A is a professional boundary condenser microphone tailored for kick drums and other bass-heavy instruments. Its low-profile design and specialized half-cardioid polar pattern deliver precise low-end capture with maximum gain-before-feedback, making it ideal for both live and studio environments.

With a flat boundary surface meant to sit on or inside the instrument, the BETA 91A provides powerful punch and clarity from the low frequencies upward. It features a frequency response from 20 Hz to 20 kHz and can handle ultra-high sound pressure levels thanks to its robust internal preamp and durable construction.

The half-cardioid pickup pattern covers the hemisphere above the mounting surface, delivering strong targeted sound while rejecting off-axis noise and stage clutter. A contour switch lets you choose between flat response or a low-mid scoop for extra attack and clarity, making it versatile across applications.

Finished in a durable matte black housing, the BETA 91A integrates seamlessly into professional rigs while offering rugged stage reliability and studio-quality performance for low-frequency sources.

Features of Shure BETA 91A Boundary Condenser Microphone Half-Cardioid for Kick Drum

• Boundary condenser design optimized for kick drums and low-frequency instruments
• Half-cardioid polar pattern (cardioid hemisphere above mounting surface) for high gain before feedback
• Frequency response from 20 Hz to 20 kHz
• High maximum SPL (?155 dB) for ultra-loud sources
• Contour switch: flat or low-mid scoop for enhanced clarity/attack
• Low-profile boundary form factor, easy mounting on drum or flat surface
• Rugged construction with steel grille and die-cast housing for professional use

Applications of Shure BETA 91A Boundary Condenser Microphone Half-Cardioid for Kick Drum

• Kick drum miking (live and studio)
• Piano or other acoustic instruments with strong low frequency content
• Low-frequency percussion instruments
• Live sound reinforcement where stage space or mounts are limited
• Recording environments requiring clean, punchy low-end capture

Specifications of Shure BETA 91A Boundary Condenser Microphone Half-Cardioid for Kick Drum

MN-25