SM58

The Shure SM58 is a cardioid dynamic vocal microphone that has become one of the most widely used on-stage mics. Introduced in 1967 by Shure, it is renowned for its durability, consistent performance, and suitability for live vocal applications.

Design and performance: The SM58 uses a moving-coil dynamic element with a cardioid pickup pattern, which helps reject unwanted noise from the rear and sides. Its frequency response is tailored for vocal reproduction, typically spanning 50 Hz to 15 kHz, with a presence boost around 2.5 to 4 kHz to improve vocal intelligibility. The microphone features a rugged all-metal construction, a spherical steel grille, and a built-in pop filter to reduce plosives. It provides a standard XLR output, a nominal impedance of about 150 ohms, and a sensitivity of roughly -56 dBV/Pa (about 1.6 mV) at 1 kHz.

Usage and reception: The SM58 is widely adopted for live performances, rehearsals, broadcasts, and public-address systems. It is commonly supplied with a mic stand clip and is compatible with standard windscreens and shock mounts. Its ruggedness and reliability have made it a default choice for many touring artists and venues, contributing to its status as a workhorse on stages around the world.

Variants and related models: The SM58 is part of Shure's SM line and is marketed in several variants, including the SM58-LC and SM58S, which differ in aspects such as cable length or stand-mount features. The microphone remains in production and has seen relatively few design changes since its introduction, reinforcing its reputation as a durable, long-serving live vocal microphone.