Shure BETA 91A Kick Drum Boundary Microphone

Shure BETA 91A Kick Drum Boundary Microphone

The Shure BETA 91A is a professional boundary condenser microphone designed for kick drums, piano, and other low-frequency instruments. Its half-cardioid polar pattern provides focused pickup above the mounting surface, while the tailored low-frequency response delivers strong bass impact, defined attack, and clear articulation for live sound and studio recording.

Key Features

• Designed for Kick Drums: Tailored frequency response provides powerful low-end reproduction with defined attack and punch.
• Half-Cardioid Polar Pattern: Provides focused pickup above the mounting surface with strong rejection of off-axis sound.
• Electret Condenser Capsule: Delivers detailed transient response and clear reproduction of low-frequency instruments.
• 20 Hz–20 kHz Frequency Response: Captures deep bass frequencies together with high-frequency attack and detail.
• High SPL Handling: Handles sound pressure levels up to 155 dB SPL with a 2.5 kΩ load.
• Two-Position Contour Switch: Select between a flat response or a low-mid scoop for additional punch and attack.
• Integrated Preamplifier: Built-in electronics provide a compact setup without requiring an external microphone preamp module.
• Integrated XLR Connector: Reduces stage clutter and simplifies connection inside or near a kick drum.
• Low-Profile Boundary Design: Can be positioned directly on a surface without requiring an external microphone stand.
• Rugged Construction: Steel grille and die-cast metal housing support professional stage and studio use.
• Phantom Powered: Operates from standard 11–52V DC phantom power.

Specifications

Why Choose the Shure BETA 91A?

• Powerful Kick Drum Response: The tailored low-frequency response delivers deep bass together with strong attack and definition.
• High SPL Capability: Handles extremely loud sound sources without compromising performance.
• Flexible Sound Shaping: The two-position contour switch provides either a natural response or a scooped low-mid sound with increased punch.
• Strong Sound Isolation: The half-cardioid pattern helps reduce unwanted off-axis sound and improves gain before feedback.
• Simple Placement: Its boundary design can be placed directly inside a kick drum or on another suitable surface without an external stand.
• Professional Construction: Integrated preamp, XLR connection, rugged metal housing, and steel grille support demanding live and studio use.

A Professional Boundary Microphone for Kick Drums and Bass Instruments

The Shure BETA 91A combines deep low-frequency reproduction, high SPL handling, precise transient response, flexible contour control, and rugged low-profile construction. It is well suited for kick drums, piano, bass-heavy instruments, live sound reinforcement, studio recording, touring, and professional stage applications.