The Shure SM137 is a small-diaphragm cardioid condenser microphone designed for professional studio recording and critical live sound applications. Its compact form factor and tailored frequency response make it exceptionally versatile for capturing acoustic instruments, drum overheads, piano, and choirs with clarity and precision. The microphone features a true condenser capsule that provides a detailed, transparent sound with a wide frequency response and high sensitivity, capable of capturing subtle nuances and fast transients. The cardioid polar pattern offers good off-axis rejection, helping to isolate the intended source from ambient room noise and other instruments.

This microphone requires standard 48V phantom power and includes a -15 dB pad to handle high sound pressure levels, such as those from close-miked brass or loud guitar amplifiers, and a bass roll-off filter to reduce low-frequency rumble and proximity effect. Its rugged construction includes a steel mesh grille and a robust housing, making it suitable for both studio and live stage use. The SM137 is designed to deliver consistent, reliable performance in demanding environments, providing audio engineers with a trusted tool for a wide range of recording and reinforcement tasks.

The SM137's combination of detailed sonic character, practical onboard switches, and durable build has made it a valued microphone for engineers seeking a versatile and dependable small-diaphragm condenser for capturing accurate, uncolored sound sources.