Shure Incorporated BETA Series Vocal Microphone BETA 58A

The Shure Beta 58A® is a high-output supercardioid dynamic vocal microphone designed for professional sound reinforcement and project studio recording. It has become a leading choice among vocalists and touring professionals worldwide.
The Beta 58A maintains a true supercardioid pattern throughout its frequency range. The Beta 58A has a shaped frequency response that is ideal for close-up vocals. The superb performance of this microphone is not affected by rough handling because of its rugged construction, proven shock mount system, and hardened steel mesh grille.
Type
Dynamic (moving coil)
Frequency Response
50 to 16,000 Hz
Polar Pattern
Supercardioid, rotationally symmetrical about microphone axis, uniform with frequency.
Output Level (at 1,000 Hz)
Open Circuit Voltage: -51.5 dBV/Pa* (2.6 mV)
*1 Pa = 94 dB SPL
Impedance
Rated impedance is 150 ohms (290 ohms actual) for connection to microphone inputs rated low Z Phasing.
Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3.
Case
Silver blue enamel-painted die cast metal with hardened, matte-finished, spherical steel mesh grille.
Adjustable, Stand Adapter
Slip-in microphone mounting, unbreakable, adjustable through 180 degrees with standard 5/8"-27 thread, black finish.
Net Weight
278 grams (9.92 oz)