The Beta 91A is optimized for kick drum reinforcement. The Beta 91A is a half-cardioid condenser boundary microphone with an integrated XLR preamp designed for strong low-end response. It has a dual contour switch for optimized recording depending on the application.
The Beta 91A is a half-cardioid condenser-boundary-plane microphone. You can expect strong low-end response, as this microphone is specifically designed for bass frequency applications, and fantastic attack and punch for studio sound quality, even at extremely high sound pressure levels (SPL).
The Beta 91A features a new and modified microphone capsule. The new capsule gives a more natural high frequency response than the Beta 91.