Shure KSM44A/SL Multi-Pattern Microphone


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Product Code: 2962
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The Shure KSM44A/SL Multi-Pattern Microphone is a large diaphragm condenser microphone which offers flexibility with the selectable multiple polar patterns. It features dual gold Mylar diaphragms for superior transient response, a subsonic filter, and preamplifier for transparency.

The Shure KSM44A/SL Multi-Pattern Microphone brings you multiple polar patterns (cardioid, omnidirectional and bidirectional) for maximum flexibility in a wide variety of recording applications. It is designed as a premium vocal microphone for studio recording but also works perfectly with acoustic and wind instruments, low frequency instruments -- such as double bass, electric bass, kick drum, overhead miking -- drums or percussion, ensembles - choral or orchestral. The refined and sophisticated design of the Shure KSM44A/SL features externally biased, dual 1-inch diaphragms, extensive internal pop filtering and Prethos® advanced preamplifier technology for a ground-breaking threshold minimum of self-noise. The Shure KSM44A/SL is the premier choice for the highest level of professional studio and stage performance.

Prethos™ Advanced Preamplifier Technology
Prethos™ Advanced Preamplifier Technology consists of highly sophisticated, extremely transparent internal circuitry architectures that enable unprecedented seamless audio, maximizing audio quality for premium microphone performance. With Prethos the Shure KSM44A/SL achieves groundbreaking specifications: 4 dB of self-noise with the cardioid pickup pattern.

Not Only for the Studio
The Shure KSM44A/SL comes with all features that a premium and flexible studio mic needs: dual large diaphragms with switchable polar patterns for a nuanced, clear and full sound, extremely low self noise, high sensitivity, minimized proximity effect, 3-position low frequency filter. A spider shock mount and an aluminum carrying case come with Shure KSM44A/SL. With the rugged design and the 15 dB pad the microphone is also used on stage.

Premium Components
The Shure KSM44A/SL is built with premium components such as the dual 1 inch, externally biased, ultra-thin, 2.5 µm, 24 Karat gold-layered, low mass diaphragms. Internal and external connectors are gold plated.

Shure KSM44A/SL Multi-Pattern Microphone Applications

  • Studio Ensemble
  • Studio Vocals
  • Orchestra/Strings
  • Woodwinds
  • Brass/Saxophone
  • Acoustic Bass
  • Acoustic Guitar
  • Guitar Amp
  • Piano/Organ
  • Cymbals
  • Percussion
  • Podcast/Voiceover

Shure KSM44A/SL Multi-Pattern Microphone Features

  • Dual 1-inch, externally biased, ultra-thin, 2.5 micron, 24-karat gold-layered, low mass, Mylar® diaphragms provide superior transient response
  • Multiple polar patterns: cardioid, omnidirectional and bidirectional–for maximum flexibility in a wide variety of applications
  • Prethos™ Advanced Preamplifer Technology: provides transparency, extremely fast transient response and no crossover distortion, minimizes harmonic and intermodulation distortions
  • Groundbreaking self-noise specifications: 4 dB (cardioid), 6 dB (omnidirectional), 7.5 dB (bidirectional)
  • Full-range frequency response (20 Hz - 20 KHz) for an extremely accurate reproduction of voice and instruments
  • Highly consistent polar patterns
  • Premium electronic components and gold-plated internal and external connectors
  • Subsonic filter eliminates rumble from mechanical vibration below 17 Hz
  • 15 dB attenuation switch for handling high input SPL sound sources
  • 3-position switchable low-frequency filter virtually eliminates unwanted background noise and controls proximity effect
  • Durable zinc die-cast housing and hardened low carbon steel grille to protect the cartridge from accidental drops or misuse
  • An integrated three-stage pop protection grille to guard against wind and breath noise
  • An internal shock mount to reduce unwanted handling and stand noise

Shure KSM44A/SL Multi-Pattern Microphone Specifications

  • Cartridge Type: Dual-Diaphragm, Externally-Biased Condenser
  • Polar Pattern: (Selectable) Cardioid, Omnidirectional, Bidirectional
  • Frequency Response: 20 to 20,000 Hz
  • Output Impedance: 50 Ohm
  • Sensitivity (Open Circuit Voltage, @ 1 kHz, Typical):
    • Cardioid: –31 dBV/Pa (29.8 mV)
    • Omnidirectional: –37 dBV/Pa (14.8 mV)
    • Bidirectional: –36 dBV/Pa (16.8 mV)
  • Maximum SPL 1 kHz at 1% THD:
    • Cardioid:
      • PAD OFF:
        • 2500 Ohm Load: 134 dB
        • 1000 Ohm Load: 131 dB
      • PAD ON:
        • 2500 Ohm Load: 150 dB
        • 1000 Ohm Load: 147 dB
    • Omnidirectional:
      • PAD OFF:
        • 2500 Ohm Load: 140 dB
        • 1000 Ohm Load: 137 dB
      • PAD ON:
        • 2500 Ohm Load: 152 dB
        • 1000 Ohm Load: 149 dB
    • Bidirectional:
      • PAD OFF:
        • 2500 Ohm Load: 139 dB
        • 1000 Ohm Load: 136 dB
      • PAD ON:
        • 2500 Ohm Load: 151 dB
        • 1000 Ohm Load: 148 dB
  • Signal-to-Noise Ratio:
    • Cardioid: 90 dB
    • Omnidirectional: 88 dB
    • Bidirectional: 86.5 dB
  • Dynamic Range @ 1 kHz:
    • Cardioid:
      • 2500 Ohm Load: 130 dB
      • 1000 Ohm Load: 127 dB
    • Omnidirectional:
      • 2500 Ohm Load: 134 dB
      • 1000 Ohm Load: 131 dB
    • Bidirectional:
      • 2500 Ohm Load: 131 dB
      • 1000 Ohm Load: 128 dB
  • Clipping Level 20 Hz to 20 kHz, 1% THD:
    • 2500 Ohm Load: 9 dBV
    • 1000 Ohm Load: 6 dBV
  • Self Noise (Equivalent SPL, A-Weighted, Typical):
    • Cardioid: 4 dB SPL-A
    • Omnidirectional: 6 dB SPL-A
    • Bidirectional: 7.5 dB SPL-A
  • Common Mode Rejection (10 to 100,000 kHz): = 50 dB
  • Attenuator Switch: -15 dB
  • Low-Frequency Filter Switch: Flat, –6 dB/Octave below 115 Hz, or –18 dB/Octave below 80 Hz
  • Connector: Three-pin Professional Audio (XLR), Male, Balanced
  • Polarity: Positive Pressure on Diaphragm Produces Positive Voltage on Pin 2 with Respect to Pin 3
  • Power Requirements: 11–52 V DC Phantom Power (IEC-61938) 5.8 mA, Maximum
  • Net Weight: 492 g (17.4 oz.)

Shure KSM44A/SL Multi-Pattern Microphone Includes

  • 1 x Shure KSM44A/SL Multi-Pattern Microphone
  • 1 x Shure A44AM ShureLock® Stand Mount
  • 1 x Shure A44ASM ShureLock® Elastic Shock Mount
  • 1 x Shure RK383 Suspension Shock Mount Elastic Cord, Cristal
  • 1 x Shure A44AVB Protective Velveteen Pouch
  • 1 x Shure AK44C Zippered Carrying Case
  • 2 Year Warranty

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What We Think


The Shure KSM 44A/SL is an excellent multi-purpose microphone, equally suited for vocals as it is on drum overheads, toms, stringed instruments, guitar cabinets, and pretty much anything else you can think to aim it at. Lots of great accessories, sturdy construction, and classic sound, make the Shure KSM 44A/SL a microphone that is a must have (we suggest a pair for stereo recording) and that you'll lean on for years to come.

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