Shure KSM44A/SL | Multi Pattern Large Diaphragm Side Address Condenser Cristal

Condenser Microphone

The KSM44A is a premium, large-diaphragm, side-address condenser microphone with multiple polar pattern options (cardioid, omnidirectional, bidirectional).  The refined and sophisticated design of the KSM44A features an externally biased, dual 1-inch diaphragms, exensive internal pop filtering and Prethos Advanced Preamplifier Technology for a ground-breaking threshold minimum of self-noise.  The KSM44A is the premier choice for the highest level of professional studio and stage performance.

A milestone achievement in sound reinforcement, Prethos Advanced Preamplifier Technology employs transparent internal circuitry architectures that enable unprecedented audio quality and performance.

Key Features

  • Prethos Advanced Preamplifier Technology: Class A, discrete, transformerless preamplifier provides  transparency, extremely fast transient response and no crossover distortion. Minimizes harmonic and intermodulation distortions.
  • Groundbreaking specifications: 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 frequency response
  • 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

Technical Specifications

Cartridge 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
Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Net Weight
492 g (17.4 oz.)
Three-pin professional audio (XLR). male, balanced


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