Consistently the first choice of performers around the globe, the SM58 vocal microphone is a genuine world standard and a true audio legend. The Shure SM58 is a unidirectional (cardioid) dynamic vocal microphone designed for professional vocal use in sound reinforcement and studio recording.
A highly effective, built-in, spherical filter minimizes wind and breath "pop" noise. A cardioid pickup pattern isolates the main sound source while minimizing unwanted background noise. The SM58 has a tailored vocal response for a sound that is a world standard. Rugged construction, a proven shock mount system, and a steel mesh grille ensure that even with rough handling, the SM58 will perform consistently. Outdoors or indoors, singing or speech - the SM58 is the overwhelming choice of professionals worldwide.
Features
Frequency response tailored for vocals, with brightened midrange and bass rolloff.
Uniform cardioid pickup pattern isolates the main sound source and minimizes background noise.
Pneumatic shock-mount system cuts down handling noise.
Effective, built-in spherical wind and pop filter.
Supplied with break-resistant stand adapter which rotates 180 degrees.
Legendary Shure quality, ruggedness, and reliability.
Cardioid (unidirectional) dynamic.
Frequency response: 50 to 15,000 Hz
About Shure
S.N. Shure began his company's relationship with the products of personal sound by launching a one-man operation in 1925 that sold radio parts kits. Since then, Shure microphones and audio electronics have been the tools of choice for politicians, musicians, corporations, churches, and broadcasters across the world. Anyone who considers sound to be an important part of his or her self-expression has probably used one of Shure's microphones, phonograph needles, or other professional audio products.
Technical Info
Type: Dynamic (moving coil)
Frequency Response: 50 to 15,000 Hz (see Figure 2)
Polar Pattern: Unidirectional (cardioid), rotationally symmetrical about microphone axis, uniform with frequency Output Level (at 1,000 Hz)
Open Circuit Voltage: -74.5 dB* (0.19 mV)
Power Level: -56.0 dB**
*0 dB = 1 v/ bar
**0 dB = 1 mw/10 bar
Impedance: Rated impedance is 150 (300 actual) for connection to microphone inputs rated low impedance
Polarity: Positive pressure on diaphragm produces positive voltage on
pin 2 with respect to pin 3
Connector: 3-pin professional audio connector (male XLR type)
Case: Dark gray, enamel-painted, die cast metal; matte-finished,
silver colored, spherical steel mesh grille
Overall Dimensions: 51 x 162 x 23mm (2 x 6-3/8 x 29/32 in.)
Swivel Adapter: Positive-action, break-resistant, adjustable through 180Á,
with standard 5/8 in.-27 thread
Net Weight: 298 g (10.5 oz.)
Personal use items that are used at your mouth or in your ear cannot be returned once opened due to health laws. This includes all microphones, guitar talk boxes, ear plugs, and in-ear earphones. 
