Shure SM137 — Professional Instrument Condenser Microphone
SM137 Overview
The Shure SM137 is a cardioid condenser microphone engineered for natural, accurate sound reproduction across a wide range of instrument applications. Its thin diaphragm design and Class A preamplifier work together to deliver consistent performance whether the source is a delicate acoustic instrument or a high-SPL stage environment. The flat frequency response ensures the microphone captures the true character of the source without coloration, making it a reliable choice for live sound engineers, studio engineers, and system integrators specifying microphone packages for venues and houses of worship. The SM137 is built to Shure’s professional standards for durability and consistency in demanding production environments.
Its versatile cardioid polar pattern provides focused pickup while rejecting off-axis bleed, making it equally well-suited for close-miking applications on stage and controlled studio tracking sessions.
Key Features
- Cardioid Polar Pattern — Focused directional pickup minimizes off-axis bleed and feedback in live and studio environments
- Thin Diaphragm Design — Delivers accurate transient response and natural sound reproduction across instrument sources
- Class A Preamplifier — Provides consistent, low-noise amplification for reliable performance across applications
- Flat Frequency Response — Captures the true character of acoustic and amplified instruments without imposed coloration
- Low Self-Noise — Suited for quiet acoustic sources where noise floor is critical
- High-Volume Performance Capability — Handles high-SPL sources without distortion, expanding its range from delicate acoustics to loud stage instruments
- Condenser Capsule Technology — Offers the extended frequency detail and sensitivity characteristic of professional condenser designs

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