The Shure BETA 91A is a premium electret condenser boundary microphone specifically engineered for kick drum and low-frequency instrument capture in live sound, broadcast, and studio recording. Introduced in 2008 as part of Shure’s BETA series, it combines a half-cardioid (hemicardioid) polar pattern with a rugged, low-profile design that sits inside the kick drum—delivering powerful, punchy lows with exceptional clarity and minimal bleed. Its integrated preamplifier and two-position contour switch allow engineers to tailor the response for maximum attack or full-bodied warmth, making it the go-to choice for modern drum sounds from rock to jazz to electronic music.
