Shure Beta 57A

Type Dynamic (moving coil) Frequency Response 50 to 16,000 Hz   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. Net Weight 275 grams (9.6 oz)