Shure Incorporated BETA Series Dynamic Instrument Microphone BETA 57A

The Shure Beta 57A® is a high output supercardioid dynamic microphone designed for professional sound reinforcement and project studio recording. It maintains a true supercardioid pattern throughout its frequency range. This insures high gain-before-feedback, maximum isolation from other sound sources, and minimum off® axis tone coloration.
Excellent for acoustic and electric instruments as well as for vocals, the extremely versatile Beta 57A dynamic microphone provides optimal warmth and presence. Typical applications include drums, guitar amplifiers, brass, woodwinds and vocals.
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 dBV/Pa* (2.8 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.
Connector
Three-pin professional audio connector (male XLR type).
Case
Silver blue enamel-painted die cast metal with hardened, matte-finished steel mesh grille.
Adjustable Stand Adapter
Slip-in, adjustable through 180 degrees, with standard 5/8"-27 thread.
Net Weight
275 grams (9.6 oz)