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The Shure Model SM87A is a professional-quality, handheld condenser microphone for use in sound reinforcement, broadcasting, and studio recording installations. Its supercardioid polar pattern provides greater rejection of unwanted sound sources, making it ideal for miking individual instruments in a multi-microphone setting or for miking single sources in a reverberant or noisy environment.

The SM87A features a controlled low-frequency roll-off tailored for optimum performance when close-miking sound sources. An integral three-stage wind and pop filter protects against wind and breath noise. Its built-in shock mount reduces stand and handling noise. The SM87A operates on phantom power.

SM87A - without cable, Phantom power required

Features:

• Highly directional supercardioid pickup pattern
• Controlled low-frequency roll-off
• Very low RF and magnetic hum susceptibility
• Minimally affected by varying load impedance
• Built-in wind and pop filter
• Transducer element shock mounted
• Rugged construction for outstanding reliability
• Field-usable over a wide range of temperature and humidity conditions
• Accepts a wide variety of phantom power sources, including DIN 45 596 voltages of 11 and 52 Vdc

Specifications:

• Cartridge Type: Condenser (electret bias)
• Frequency Response: 50 to 20,000 Hz
• Polar Pattern: Supercardioid
• Output Impedance: Rated at 150 ohms (100 ohms actual +/- 20%), Recommended minimum load impedance: 800 ohms Sensitivity (at 1,000 Hz)
• Open Circuit Voltage: -52.5 dBV/Pa (2.4 mV)(1 Pa = 94 dB SPL)
• Clipping Level (at 1,000 Hz): 1000 ohm Load: -6 dBV (0.5 V)
• Maximum SPL (at 1,000 Hz): 140.5 dB (0.25% THD, 1000 ohm load)
• Self-Noise (equivalent sound pressure level; measured with true rms voltmeter): 24 dB typical, A-weighted, 26 dB typical, weighted per DIN 45 405
• Dynamic Range: 116.5 dB (maximum SPL to A-weighted noise level)
• Signal-to-Noise Ratio: 70 dB at 94 dB SPL (IEC 651)(S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise A-weighted)
• Polarity: Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3
• Power: Phantom Supply Requirement: 11 to 52 Vdc, positive at both pins 2 and 3, Current Drain: 1.0 to 1.2 mA
• Connector: Three-pin (XLR) professional audio
• Case: Aluminum construction with steel grille and satin black finish
• Net Weight: 200 grams (7 oz)