Shure BETA 91A – Boundary Microphone for Kick Drum & Low-Frequency Instruments The Shure BETA 91A is a premium condenser boundary microphone designed specifically for kick drums and low-frequency instrument applications. Featuring a half-cardioid polar pattern, it offers exceptional gain-before-feedback, focused capture, and high SPL handling. Its low-profile design with integrated preamp and XLR output ensures seamless stage or studio integration with minimal clutter.

Key Features Half-cardioid polar pattern – excellent rejection of off-axis sound and high feedback immunity Tailored frequency response optimized for kick drums and other low-end sources Two-position contour switch: choose between flat response and a low-mid scoop for enhanced attack Handles extremely high SPLs – ideal for aggressive, high-volume sound sources Integrated preamp and XLR connector – no need for external accessories Rugged, low-profile design fits easily inside a kick drum Perfect for both live and studio use Built to Capture Every Hit The BETA 91A combines superior low-frequency response with a crisp, punchy attack, delivering studio-quality sound on the loudest stages. Its optimized design is ideal for engineers who demand consistency, power, and clarity from their kick drum sound without the hassle of external mounts or complicated positioning.

Contour Switch – Adapt Your Sound Customize your sound with a simple two-position EQ switch: Flat Response: natural, full-range sound reproduction – ideal for most acoustic applications Low-Mid Scoop: boosts attack and clarity by cutting muddy frequencies – great for modern punchy mixes Technical Specifications Transducer Type: Condenser (Electret) Polar Pattern: Half-Cardioid Frequency Response: Tailored for low-frequency sources Power Requirements: Phantom power 11–52 V Connector: 3-pin XLR Maximum SPL: Over 155 dB Output: Active balanced Integrated Preamp: Yes What’s in the Box?

Shure BETA 91A Microphone Zippered carrying pouch Ideal Applications Kick drum (bass drum) Low-frequency instruments: piano, floor tom, timpani, upright bass Live stage and studio environments Shure BETA 91A – Trusted by Professionals Whether on tour or in the studio, the BETA 91A provides deep, punchy low-end with exceptional clarity and durability. Its all-in-one design and superior sound quality make it a staple choice for engineers and drummers worldwide.