SHURE Dynamic Microphone For sale: the SM-58. The Shure SM58 is highly regarded for its excellent sound quality and durability. Unidirectional (cardioid): It has the characteristic of firmly capturing the main sound source and suppressing unwanted background noise. This ensures a high feedback margin and delivers clear vocal sound. Frequency response optimized for vocals: It has optimal response characteristics for singing and speech, providing a standard sound worldwide. Robust design: With a sturdy body, a proven shock mount system, and a steel mesh grille, it has high durability to withstand harsh usage environments. Pop noise reduction: The built-in spherical filter minimizes wind noise and "pop" noise caused by breath.