The Beta 57A is designed for use with amplified or acoustic instruments, plus vocals. Its flat, compact grille design gets the microphone cartridge close to the sound source to utilize proximity effect as desired.The Beta 57A is designed for use with amplified or acoustic instruments. The compact grille design gets the microphone cartridge close to the sound source.
Uniform supercardioid pattern with high gain-before-feedback
Neodymium magnet for high signal-to-noise ratio
Advanced pneumatic shock mount system
Tailored frequency response provides drums, guitars, vocals, and horns with studio quality sound
Hardened steel mesh grille that facilitates use of proximity effect and resists wear and abuse
Minimally affected by varying load impedance
Shure quality and reliability
Dynamic (moving coil)
50 to 16,000 Hz
Supercardioid, rotationally symmetrical about microphoneaxis, uniform with frequency.
Output Level (at 1,000 Hz)
Open Circuit Voltage -51 dBV/Pa* (2.8 mV)
*1 Pa = 94 dB SPL
Rated impedance is 150 ohms (290 ohms actual) for connectionto microphone inputs rated low Z.
Positive pressure on diaphragm produces positive voltage onpin 2 with respect to pin 3.
Three-pin professional audio connector (male XLR type).
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"-27thread.
275 grams (9.6 oz)