Ultra-Compact Side-Address Instrument Microphone comes with four (4) different capsules, one (1) each of Cardiod,
Supercardioid, Omnidirectional and Bidirectional.
Shure's Beta 181 is an ultra-compact side-address instrument microphone with interchangeable capsules. It is designed for discrete placement and control in live and studio environments. The BI model features a bi-directional polar pattern capsule.