The Shure BETA58®A dynamic microphone is precision-engineered for vocals in professional live sound reinforcement and studio recording applications. A tailored frequency response accentuates the clarity of vocals, and a tight, supercardioid pickup pattern ensures high gain before feedback, maximum sound isolation, and minimum off-axis tone coloration.
The BETA58A is ideal for close-up lead and background vocals, especially in high sound pressure level (SPL) environments. A proven shock mount system, hardened steel-mesh grille, and superior build quality withstand the rigors of daily sound reinforcement.
The following table lists the most common applications and placement techniques. Keep in mind that microphone technique is largely a matter of personal taste; there is no one “correct” microphone position.
|Application||Suggested Microphone Placement||Tone Quality|
|Vocals||Lips less than 15 cm (6 in.) away or touching the windscreen, on axis to microphone.||Robust sound, emphasized bass, maximum isolation from other sources.|
|15 to 60 cm (6 in. to 2 ft.) away from mouth, just above nose height.||Natural sound, reduced bass.|
|20 to 60 cm (8 in. to 2 ft.) away from mouth, slightly off to one side.||Natural sound, reduced bass and minimal “s” sounds.|
|90 cm to 1.8 m (3 to 6 ft.) away.||Thinner, distant sound; noticeable levels of ambient noise.|
|Guitar & Bass Amplifiers||2.5 cm (1 in.) from speaker, on-axis with center of speaker cone.`||Sharp attack; emphasized bass.|
|2.5 cm (1 in.) from speaker, at edge of speaker cone.||Sharp attack; higher frequency sound.|
|15 to 30 cm (6 to 12 in.) away from speaker and on-axis with speaker cone.||Medium attack; full, balanced sound.|
|60 to 90 cm (2 to 3 ft.) back from speaker, on-axis with speaker cone.||Softer attack; reduced bass.|
A supercardioid microphone has the greatest sound rejection at points 120° toward the rear of the microphone. Place the microphone so that unwanted sound sources, such as monitors and loudspeakers, are at these angles, not directly behind it. To minimize feedback and ensure optimum rejection of unwanted sound, always test microphone placement before a performance.
Unidirectional (cardioid) microphones progressively boost bass frequencies by 6 to 10 dB below 100 Hz when the microphone is at a distance of about 6 mm (1/4 in.) from the sound source. This phenomenon, known as proximity effect, can be used to create a warmer, more powerful sound. To prevent explosive low frequency sound during close-up use, the bass response gradually rolls off. This provides greater control and helps the user take advantage of proximity effect.
Dynamic (moving coil)
50 to 16,000 Hz
EIA rated at 150 Ω (290 Ω actual)
at 1kHz, open circuit voltage
-51.5 dBV/Pa (2 .6 mV) 
Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
0.278 kg (0.62 lbs)
Three-pin professional audio (XLR), male, balanced
Silver blue enamel-painted die cast metal with hardened, matte-finished steel mesh grille
 1 Pa=94 dB SPL
|Microphone Clip for SM58, SM57, SM87A, BETA87A, BETA87C, PGA57, PGA58, PGA48, PGA81||A25D|
|5/8" to 3/8" (Euro) Threaded Adapter||95A2050|
|Zippered Carrying Bag||95A2314|
|Foam Windscreen for all larger Shure "ball-type" Microphones available in black, blue, gray, green, red and yellow||A58WS|
|Shock Stopper® Isolation Mount||A55HM|
|25 foot (7.5m) Triple-Flex® Microphone XLR Cable with Switchcraft connectors||C25E|
|Cartridge for BETA58A||R176|
|Grille for Wired and Wireless BETA58A, BETA58M and BETA58MR||RK265G|
|Plug (Connector) Assembly||90J1984|
This product meets the Essential Requirements of all relevant European directives and is eligible for CE marking.
The CE Declaration of Conformity can be obtained from: www.shure.com/europe/compliance
Authorized European representative:
Shure Europe GmbH
Headquarters Europe, Middle East & Africa
Department: EMEA Approval
75031 Eppingen, Germany
Phone: +49-7262-92 49 0
Fax: +49-7262-92 49 11 4