Shure Beta 91A - Microphone for Stage/Performance - 20-20000 Hz

Shure Beta 91A is a professional stage and performance microphone designed to deliver clear, powerful low-end and detailed high frequencies across its 20–20,000 Hz range.

The Shure Beta 91A features a cardioid directional pattern that focuses on the desired sound source while reducing off-axis noise, making it ideal for kick drums and bass cabinets on stage and in studio applications. Its sensitivity of -48.5 dB and an output impedance of 146 Ω ensure reliable signal capture and compatibility with most mixing consoles.

With wired XLR-3 connectivity and an XLR output, the Beta 91A supports standard professional setups and requires phantom power in the range of 11–52 V, consuming approximately 5.4 mA. The unit includes a 7.6 m cable and an RF power rating of 3.8 mW to maintain stable performance during live events.

Noise reduction is built in, and the microphone offers a strong signal-to-noise ratio of 64.5 dB for clear, low-noise recordings and live sound reinforcement. The microphone’s robust design is reflected in its weight of 470 g and dimensions of 139.1 x 20.3 mm, finished in Shure’s blue color for easy stage identification.

Typical use cases include live drum kits—especially kick drums—bass amp miking, and reinforced low-frequency capture for theater and broadcast. The Beta 91A’s cardioid pickup and wide 20–20,000 Hz frequency response make it a versatile choice for engineers seeking punchy low end without sacrificing clarity in the mids and highs.

Key selling points are its professional-grade build, low-noise performance, long cable for stage flexibility, and standard XLR integration that fits into existing signal chains. The package contains one microphone and is ready for immediate deployment in live and studio environments.

• Frequency response: 20–20,000 Hz
• Sensitivity: -48.5 dB, Impedance: 146 Ω
• XLR-3 wired connection with 7.6 m cable