Shure KSM44A Multi-Pattern Dual Diaphragm Microphone

→ Transducer Type: Condenser (externally biased)
→ Polar Pattern: Cardioid, Omnidirectional, Bidirectional
→ Frequency Response: 20 to 20,000 Hz
→ Output Impedance: 50 ohms
→ Attenuator Switch: 15 dB
→ Low-Frequency Filter Switch: Flat, –6 dB/octave below 115 Hz, or –18 dB/octave below 80 H
→ Power Requirements: 11–52 V DC phantom power (IEC-61938) 5.8 mA, maximum
→ Common Mode Rejection (10 to 100,000 Hz): > 50 dB
→ Common Mode Rejection (20 Hz to 20 kHz): > 50 dB
→ Polarity: Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
→ Net Weight: 492 g (17.4 oz.)
→ Connector: Three-pin professional audio (XLR). male, balanced
→ A milestone technical achievement, Shure's Prethos Advanced Preamplifier Technology provides 4dB of self-noise and max SPL of 131 dB for a total dynamic range of 127 dB – an increase of 7 dB that defines the new standard for cleanly nuanced audio capture
→ Multiple polar patterns–cardioid, omnidirectional and bidirectional–for maximum flexibility in a wide variety of recording applications
→ Dual 1 inch, externally biased, ultra-thin, 2.5 μm, 24 Karat gold-layered, low mass diaphragms provide superior transient response
→ Class A, discrete, transformerless preamplifier for transparency, extremely wide frequency response and no crossover distortion. Minimizes harmonic and intermodulation distortions
→ Premium electronic components and gold-plated internal and external connectors
→ Subsonic filter eliminates rumble from mechanical vibration below 17 Hz
→ Switchable 15 dB pad for handling extremely high sound pressure levels (SPLs)
→ 3-position switchable low-frequency filter helps reduce unwanted stand vibration noise or counteract proximity effect
→ Integrated three-stage "pop" protection grille reduces plosives and other breath noise