unidirectional condenser microphone designed for studio recording, broadcasting, and sound reinforcement. Its wide frequency response, low noise characteristics, and low RF susceptibility have made it a standard for applications involving acoustic instruments, especially guitar, piano, and cymbals.
The SM81 is ruggedly constructed. It operates on phantom power and performs over a wide range of temperatures and humidity conditions. It is furnished with a swivel adapter, attenuator-switch lock, foam windscreen, and case for carrying and storage. Other accessories are available.
As with all Shure microphones, I bought this with a confidence that I was getting a well built professional product. I recently spent a lot of money on a new Taylor acoustic guitar, and I wanted to record the high sound quality faithfully. The SM81 was an easy choice.