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Miniature Cardioid Drum Microphone

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The Shure Beta Microphone Series BETA 98AMP is a precision-engineered miniature cardioid condenser microphone for professional sound reinforcement and studio recording. The BETA98AMP features an integrated XLR preamplifier with a flexible gooseneck and the A75M Universal Microphone Mount for accurate placement in any configuration of toms, snares, or percussion. An extremely uniform cardioid polar pattern provides excellent gain-before-feedback, off-axis rejection of unwanted noise, and high maximum sound pressure level (SPL).
Premier live performance microphone with Shure quality, ruggedness, and reliability
Uniform cardioid polar pattern for maximum gain before feedback and superior rejection of off-axis sound
Tailored frequency response shaped for drums and percussion
Wide dynamic range for use in high SPL environments
Compact design and integrated preamp reduce stage clutter and ease setup
Flexible gooseneck for precise placement and easy adjustments
Enamel coated metal construction and stainless steel inner grille resist wear and abuse
Cartridge Type Electret Condenser
Polar Pattern Cardioid
Frequency Response 20 to 20,000 Hz
Output Impedance @ 1 kHz 150 O
Sensitivity open circuit voltage, @ 1 kHz, typical –50.5 dBV/Pa[1] (4 mV)
Maximum SPL 1 kHz at 1% THD[2] 2500 O load 157.5 dB; 1000 O load 153 dB
Signal-to-Noise Ratio[3] 63 dB
Dynamic Range @ 1 kHz 2500 O load 126.5 dB; 1000 O load 122 dB
Clipping Level 20 Hz to 20 kHz, 1% THD 2500 O load 12.5 dBV; 1000 O load 7.5 dBV
Self Noise equivalent SPL, A-weighted, typical 31 dB SPL-A
Connector Three-pin professional audio (XLR), male, balanced
Common Mode Rejection 10 to 100,000 kHz <_60 dB
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Power Requirements 11–52 V DC[4] phantom power (IEC-61938), 5.5 mA
Net Weight 130 g (4.6 oz.)



[1] 1 Pa=94 dB SPL
[2] THD of microphone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL
[3] S/N ratio is the difference between 94 dB SPL and equivalent SPL of self noise, A-weighted
[4] All specifications measured with a 48 Vdc phantom power supply. The microphone operates at lower voltages, but with slightly decreased headroom and sensitivity.


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Prices and specifications subject to change without notice.