The SHURE's BETA181/BI is a bidirectional condenser microphone that suitable for recording acoustic instruments, cymbals, and a variety of other sound sources in the studio because of their amazing precision. Beta 181/BI has a bidirectional (figure-8) pickup pattern, which makes it ideal for advanced mic placement techniques like Mid-Side stereo while also providing exceptional off-axis sound suppression. Even better, the Beta 181/BI features a switchable capsule, allowing you to select alternative polar patterns to suit your demands.