Beta 57A

Type: Dynamic (moving coil)
Frequency Response: 50 to 16,000 Hz; view larger; NOTE: The curve above shows on-axis response at a distance of 2 feet from a uniform sound source. Your response may vary, depending on microphone position.
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.