Shure SM81-LC Condenser Instrument Microphone

Shure SM81 Cardioid Condenser Instrument Microphone

The Shure SM81 is a high-performance cardioid condenser microphone designed for precise reproduction of acoustic instruments in studio recording, broadcasting, and sound reinforcement. Renowned for its accuracy and low self-noise, the SM81 captures guitar, piano, cymbals, and other instruments with exceptional clarity and fidelity. Its wide frequency response from 20 Hz to 20 kHz and flat response curve ensure natural, transparent sound without coloration, while low distortion across a range of load impedances preserves every nuance of the performance.

Featuring a cardioid polar pattern that remains uniform across its frequency range, the SM81 isolates the desired sound source and minimizes off-axis interference. The microphone also exhibits low RF susceptibility, making it ideal for environments with electronic equipment and potential interference. For flexibility, the SM81 provides selectable low-frequency response options (flat, 6 dB/octave, or 18 dB/octave roll-off) and a lockable 0 dB/10 dB attenuator switch, accommodating high-output instruments or close-miking situations.

The SM81 operates on phantom power (DIN 45 596, 12–48 VDC) and is built to withstand rigorous use. Rugged steel construction allows it to perform reliably across a wide range of temperatures and humidity conditions. Its durability and consistent performance make it a standard choice for professional musicians, audio engineers, and broadcasters.

The microphone comes with a swivel adapter for optimal positioning, an attenuator-switch lock, and a foam windscreen for controlled recording environments. Additional accessories are available to extend its utility in various professional settings.

Features of Shure SM81

• Cardioid condenser microphone for precise instrument recording

• Wide frequency response 20 Hz–20 kHz for natural sound reproduction

• Flat response curve for accurate tonal balance

• Low noise and high output clipping level

• Low distortion across a wide range of load impedances

• Selectable low-frequency roll-off: flat, 6 dB/octave, or 18 dB/octave

• Lockable 0 dB/10 dB attenuator switch

• Low RF susceptibility for interference-free performance

• Rugged steel construction, durable in varying temperature and humidity

• Includes swivel adapter, attenuator-switch lock, and foam windscreen

Specifications of Shure SM81